1) I would imagine that the guy’s body would be facing up the way when the leopard gets it secured on the branch in the tree?
Yes, it would. The leopard would want access to the less bony parts on the front.
2) Would the leopard have a rest before it started to feed on the guy’s body?
Yes, that's why it just lay there and licked for a bit.
3) Would the Leopard start to lick over the guy’s entire body to remove body hair first?
If there were are on the private area, yes. Otherwise the guy doesn't have enough body hair that the leopard would bother.
4) Given how thin the material of the guys swim trunks are, would it be able to taste what lay inside the trunks, given that they might still be damp from the swim?
5) Would what’s in the tight trunks move as the leopard worked it`s tongue over it?
Perhaps a little, though the trunks are pretty tight which would restrict movement somewhat.
6) From the picture there looks like there is a fair amount of meat in the front of the trunks, would the leopard try and take it all into its mouth trunks and all and try and eat it off?
Leopards don't like to eat 'fur' and the leopard would feel the trunks were fur. So, he wouldn't try to eat until the trunks were torn off.
7) Being unsuccessful in the trying to bite off the swim trunks and private parts it then tears them off with its teeth .were would it grab the thin swimsuit .where would they tear, would they come off in one piece?
It would probably just grab onto the front and tear. The teeth are so sharp that the trunks would split, but still be in one piece.The private parts would be scraped or even sliced in the process.
8) Once it starts to lick over the body without the trunks, will the guy’s private parts be moved with the action of the leopards tongue?
9) Given that this is the first time it has eaten a human male, what will it think of the guy’s private parts and their taste.
The private parts are rich in fat and blood vessels. The leopard would find that quite tasty.
10) Given that when it wakes in the morning feeling hungry again, will it have digested everything it had eaten earlier?
Not completely, but it will have moved out of the stomach and into the intestines.
11) When the rest of the people look for the guy, what and where will they find any remains?
They might find the intestines and stomach near the pool. If no scavengers got to them, hair, trunks, and bones will be under the tree.