If the smaller car is available, and you need the bigger car, you might be in trouble. The larger vehicles might all be booked or the upgrade charge may be considerably more costly than if you had reserved the larger car in the first place. This is especially true during peak rental times, when many car and van classes are sold out. Remember trunk space. The smaller car may hold all your passengers, but don t forget the luggage, golf clubs and souvenirs you ll want to bring back home.
Convertibles are great, but they do have very small trunks.
Check on the location of that city s particular rental facility to see if it is on or off-airport. Off-airport facilities can be cheaper, but transportation off the airport property will add time to your rental. If they use a shuttle, find out how long the trip will take you. You should always verify the location. Find out where you are to meet the Rental Company s representative.