I used P20 couple of years ago, whilst it's good that you didn't have to keep applying it - it stained all my clothes and even though I had a shower before going out in the evening, when I put my perfume on, my kneck went all yellow! I wouldn't use it again - especially when my hubby got really bad prickly heat with it.
If like me ,you get fed up drinking water through the day, I find that iced tea helps quench my thirst and keeps my dydrated.
A good trip to do is the lazy day boat trip - and
ICR can arrange this for you, you will get some amazing photos doing this.
Enjoy your stay - once you've been once, you wont want to go anywhere else!