Traffic going back to the airport can be pretty pokey...even on a Sat. If you are the kind of people that like to get to the gate before they begin boarding and not feel rushed I would leave the hotel 2.5 hours ahead of flight time...if you don't mind being the one that jumps on the plane as they close the gate then 1 hr 45 minutes MIGHT get you there....but sometimes there are long delays at security (never predictable though) and traffic is iffy (unless your flight leaves at 6AM or something)....most town car companies require a 2 to 2.5 hr pickup before departure time...so the 3 hrs for ME really isn't so bad. You may get to the gate and have an hour to kill before boarding, but then again maybe not....we waited almost 50 minutes to get thru security at MCO a couple of trips ago....I would have been going nuts if we were cutting it close that time.