Since eating 100% raw I traveled many times: twice around the world, once to New Zealand and Tonga Is and back the same way (it would have been a third trip around the planet otherwise), several times to Sri Lanka, Thailand, Indonesia. I could always find suitable raw food, especially a lot of fish and fruits. I used to take something in my handbag to eat during long flights. It could be eggs, shelled nuts, coconut, avocados, jackfruit, mangoes and even meat. Only durian is forbidden aboard planes, you have to eat it before boarding. Tell the flight attendant you have a special diet and ask her an empty plate with fork,knife and spoon.
From the hotels you can usually walk to or find a transportation to a market and/or supermarket, buy what you want and eat it on the spot or in your room. Don't forget to carry a knife and a spoon with you.