You can take a bus from Pathein or Yangon. The roads are better now , so for the about 260km from Yangon it will take about 5 hours, depending what bus you take. There are morning buses (i.e. 6:30am and 7:30am depending on demand, 10000 kyat) that depart from the western Yangon bus terminal (Hlaing Thar Yar Bus Terminal) which is 45 minutes by car taxi from the city centre. There is a bus service (4000 kyat) departing Pathein for Ngwe Saung at 2:00pm again depending on demand, if you miss that hire a moto taxi or jump in a jumbo for 5000 kyat or less (bargain hard!).
Hiring a car is only worth it if you have missed the morning bus and do not want to ride by night. The difference in time is not big. It will cost around 120$.
If you're travelling from Pathein, you can also catch a minivan. It departs from the bus station near Shwezigon Pagoda, the same bus station the local bus leaves from. It's a dark green Toyota Minivan with 'Beach Express' written in red writing on the front and sides. It leaves at 9am and 1pm and charges 3600 Kyat.
There is no longer a requirement to remit a copy of your visa and passport prior at a military check point on the way to Ngwe Saung.
Passports were handed to the bus operator who did have to show them to guards on the way to Ngwe Saung.
Cash & Credit
There are few ATM or bank services based within the Ngwe Saung township, bring 3-4 days of cash with backup if you can. As of February 2016, the Emerald Sea Resort did have a working ATM (often runs out of cash) and the Ngwe Saung Yacht Resort has an ATM as well as the Yamonnar Oo Resort, again unreliable though.
The next closest VISA and Mastercard ATM's are in Pathein which is a 1.5 hours by motorbike (11,000 kyat round trip). Visa cardholders need to go to CB Bank (Co-operative Bank) which is on Merchant Street within the city centre of Pathein while Mastercard cardholders need to go to AGD Bank closeby. Western Union agents are commonplace. ATM services are regularly unavailable and your hotel will call ahead to ensure services are working. Bank services open 9am till 3pm weekdays (except public holidays).
The majority of the large hotels accept Mastercards and Visa.
You may rent a bicycle, scooter or take up the services of nearby bicycle, moto and car taxis.
Moto taxi trips within the township cost 1000 kyat and 1500 kyat to the resorts to the North and South (up to a 5 minute trip).
Motorbikes (Honda Wave clones from China) can be hired for the day from most hotel receptionists for 10,000 kyat or less, there is no insurance and it is in most cases the hotel staff's own bike so take care of it and be sure to get it checked out prior to hiring if there are any known issues with the bike. The closest international standard hospital is Yangon's General Hospital which is at least 5 hours away.
The endless and quiet white sand beach. There is also an 'elephant camp' in between Ngwe Saung and Pathein.
Several comments conclude that snorkeling in Lover's Island is rather a disappointing experience.
Trips to Bird Island are available but there have been reports of strong, dangerous currents. Snorkelling there without a life jacket is not recommended.
Go to the beach, see the local village. There is not much to do in Ngwe Saung, that's the idea. Just relax and enjoy the quiet time. However, there are few options you can choose. You could visit to a fishing village at the Southern end of Ngwe Saung Beach and stay overnight there, or you could take an excursion trip to nearby islands and enjoy light snorkeling there, or you could ask your hotel to arrange an elephant ride along the small stream across the jungle at the elephant camp. Last, but not the least, you could enjoy good birding experiences at the Ngwe Saung Dam and its surrounding areas if you are a birder.
A walk to Lover's Island when the tides are receeding. The island is rocky so barefoot or flipflops are not comfortable. You can also climb a few stairs up to see it from above.
Painted umbrellas made in town or in Pathein.
There is no disco, however the very modern and stylish Bay of Bengal hotel has sometimes disco like events.
Local 'tea shops' have popped up within the township and to the North which offer cheap Myanmar brewed lager and stout beers and are busy throughout the day with local customers.
A bottle of Mandalay Rum can be purchased within the township for 1,500 kyat, 4 cans of coke will cost you 2,000 kyat (bargain for bulk purchases).
Bar 'Umo' not far from resorts like Shwe Hinta has a fire show from 7.30pm onwards. The bar has some Japanese and Western food. Drinks are a bit pricey for local alcohol and bottle of Myanmar beer is 3.000 kyat. The place also rents motorbikes (10.000k a day), bicycles and snorkeling masks.
Several hotels are closed during the rainy season. And the prices also go up during the high season.
To/from Chaung Tha beach, hire a motorbike/scooter driver for a 2h ride (14000 kyat (March 2016)) along the coast with crossing three rivers with small wooden ferries. Scenic! Much faster than the 75km detour.
Busses from Yangon to Ngwe Saung depart from the western bus terminal Hlaing Thar Yar in the morning at 6:30am, 7:00am, 7:30am and 8:00am, operated by various bus companies (Shwe Pyi Lwin, Myint and Kan Htoo Aung). They arrive in Ngwe Saung between 11:30am and 3:00pm, depending on the bus and seasonal road conditions.
Buses from Ngwe Saung to Yangon depart in the morning at 6:30am, 7:00am, 8:00am and 10:00am. Tickets can be purchased at the bus companies ticket shops in Ngwe Saung town, some hotels and guesthouses.
As of March 2016, a one-way ticket to/from Ngwe Saung costs 10,000 kyat.
Note that the Hlaing Thar Yar bus terminal is about 45 minutes to a 1 hour drive north-west of the city center by taxi, which is about 8,000 kyats.
There are also some night busses, departing around 9:00pm from the city center of Yangon (Asia Dragon, Golden Star). They arrive in Ngwe Saung in the middle of the night between 2:30am and 4:30am. To make a reservation in the hotel/guesthouse of your choise for the rest of the night is a good idea. Otherwise you may end up sleeping on the beach, when your hotel/guesthouse, that you booked for the next night, is fully booked. These busses return to Yangon around 10:00am in the morning.
There are no afternoon or night busses from Ngwe Saung to Yangon.
Alternatively a private taxi Yangon - Ngwe Saung should cost approximately 130,000 kyat (approximately $100) and take 4-5 hours depending on the time of day, as of January, 2016.