I've only ever been in two limos. One privately owned and the other was corporate. they both had seat belts. As a former paramedic, I would say "Take his booster. Even if you completely trust the limo driver you never know what other drivers will do. He will be safer in his seat - regardless of what the state requires in this situation." As a mother who will be in a wedding in Dec. w/ my two girls (they will be 2 & 4 at the time), "I don't know how I will possibly manage the girls in their dresses, me in my dress, our bouquets, and car seats!!" We will probably pass on the limo. Especially since I will have a 3 month old too!! Safety always comes first, even though we will miss the fun in the limo.