We used them last month for our trip from LAX. We needed a high back booster and convertible car seat. The pick up was awesome, our flight was 1.5 hours late and our driver met us at baggage claim. Car seats were in good condition. Our return trip, we got a minivan instead of a suburban (which still fit everyone but just wasn't as nice). However, they brought 2 booster seats, only one high back instead of the convertible car seat. My husband buckled my son in and didn't say anything, so I didn't notice until we got to the airport.. My son is 32 lbs, so he barely fit. I wasn't very happy about that. I would maybe call the day before your trip (both ways) to confirm the car seat. We didn't do that for the return trip and now I regret it.