Does anyone else think that resort airport shuttles require you to leave the resort way too early to get to the airport. Any advice on how to get around this without taking a private car? Would it be a bad idea to tell the hotel that we're on a flight that is half and hour or 45 minutes later than our actual flight time?

In my past experiences with hotel arranged shuttles, I've arrived at the airport very far ahead of time and then I'm stuck sitting in the airport for hours. Especially for flights in the morning, I would prefer to sleep in and then only arrive at the airport 1.5 hours ahead.

Advice or experiences would be much appreciated! Thank you