Unfortunately this is very expensive on the island. And the caves aren't very extreme, so you won't need 100 sherpas to carry your 10 km of ropes. You can put all your gear in your backpack. Popular holiday destination. This means there are a lot of flights and the price of the tickets aren't to high.
Food is also no problem.
But if you don't like it hot, there are supermarkets where you can find all you want to cook more European style food.