Lets say that you are invited on safari with a very good friend and he insists that he pays for everything, lets say you did him an absolutely huge favor that would be near impossible to repay. Do you go on safari.
We dont need a huge debate on ethics just a simple yes or no will do perfectly fine
If this is about you it's seems a silly question to ask on a hunting and fishing messageboard. It's whatever you personally feel good about. Who cares what anyone else thinks???? This is a question you need to ask yourself.
If he's a long time buddy he know what you like. Take the trip you only live once and it don't last forever, have you been before or ever plan on it yourself. i'd go