Hi, I’m going to be going Backpacking through the south east and had a few questions on gear. Space is very limited as I’m only going to have a 40L pack. I’ve also never dived warm water. I have about 50cold water dives in the Pacific, All on Vancouver Island. I was planning on bringing my GoPro and Sealife 1500 sea dragon light. I was debating on bringing my mask and snorkel so I could do some snorkeling off some close beaches, is there many places to snorkel? I start in Thailand and plan on going down south to the Philippines, Bali, Indonesia and a few more. Do you still use anti fog on your mask in warm water? Is there anything I need to bring besides my certification cards?