I typically don't get a car service or limos for trips but I figured I'd splurge a little on this trip as it's the first time that my wife and I will be childless (2.5 year old and 6 month old) since our last Vegas trip. I was looking st my reservation through Omni and noticed that gratuity was already included. Question is, do you still tip even though the tip is already included? It seemed a little light $7 on a $50 ride (approx 14%). I figured I'd throw the driver $10-$20 extra. I know tipping is VERY subjective but just wanted to get some feedback. Thanks!