LimoBus tipping question

We have a limo that is going to take me and my parents to the church, wait til we come out of church for pics and leave. I know I have to give the limo driver a tip.
We also have a limobus that is going to pick up the guys, drop them off at the church, come to my house to get the girls and drop them off at the church, and then take us all to the Jericho Terrace. How much should I tip the limobus since he is obviously doing more running around than the limo?
Also, we have a van taking FH and I, our parents and siblings back to my house after reception. Do we tip him also?

Yeah you should tip them all...

if the limos arent round trip then you dont have to tip as much...

I wouldnt make up your mind until that day... part of tipping depends on the service... i would say to bring 100 for the limo bus... but if the driver is a **** and theres no ac... the obviously 100 wont be necessary... but just to be safe...