Anyone ever been to Costa Rica?

My boyfriend and a couple friends of mine are all planning a trip to Costa Rica for this upcoming summer. my boyfriend has been there before so he knows a few things to do, but mostly it’s like fishing. I’ve never been there and since qwe will be there for two weeks I would like some fun things to do.

Before I go and waste my time looking at travel websites where they just make everything look fun, can anyone tell me what would be fun to do there ?

Even if you haven’t been, do you have any good ideas for me to do while im there.

( we will be renting a car so we will be able to move around, so location is not a problem ) :]