How Much to Tip???

[genetic jackhammer]

Hope this question isn't too lame, but I was wondering how much of a tip is appropriate when you utilize a Limo service like Yourride?? Do you tip more if you use the grocery store stop?? This will be our first time ever using a service like this and I don't want to make an error by under tipping the driver.

Thanks for your help

 

[ducklite]

I tip $10 each way, and then add another $5 if I make a grocery stop.

Anne