You do not want to wear your purse on one shoulder when you are traveling. Wear it across your body.. The world is full of pickpockets. Please be careful.
When you book your hotel room, you will probably want to ask for the highest floor that you can get on. This is likely where you will get the least noisy. You will also have great views.
You are probably more likely to burn in other parts of the world. Wear your sunscreen.