We are going to WDW over Spring Break. We will use a town car to get to the ASM. Wondering if you have used the above and what you felt about the car seats they provede- we have a ten month old and six year old. Also, what grocery do you go to - is $115 about right? Their website says to tip at least ten dollars each way, so that's 135 total. I am happy to tip and may even tip more. Sue Ellen from DU reccomended them, I'm just needing some more feedback before I reserve - I have used Tiffany in the past, but don't know if they'll do car seats or a grocery stop for free. Any info is great!