Yes, the ability to make a stop is a selling point for Happy Limo. They were quite matter of fact about the idea and very patient. We never felt any pressure to hurry up. We decided on pick up times to whatever degree was possible - i.e. the port doesn't open until 10:30 am so as anxious as we were to board, we couldn't really go earlier. We certainly could have chosen to go later. Pick up after the cruise is the same - they will pick you up whenever Disney makes you get off the ship. Room for luggage was fine for us. They picked us up in a town car, and we had room for 6 bags/luggage in the trunk. I kept my bag with iPad, passports, money up front with me. I tipped 20% of the trip price to each driver -- the trip from Disney to the port, and the trip from the port to the airport were two separate amounts. Since we had two separate drivers, each ended up with a different tip. I chose Happy Limo because of all the good reviews, and because they seemed to have a big enough fleet of vehicles so that if something happened on the road (have had cabs break down 3x in 25 years of travel) they would have backup plans to get us to our destination on time. I was impressed with their level of communication - call and text at each phase. Whew! I sound like a freaking commercial.