The phrase list here is terrible! Cantonese has 6 or 7 tones to go with the sounds. If you don't get the tones, you will not be understood. Why is this section so poor compared to the Chinese phrasebook? There they use standard pinyin and explanations of the tones.
There are standard systems for Cantonese as well. It's harder than Putonghua for sure, but worth doing right.