Need some advice re: auto transporters

[Viablo]

My first snake will be here tomorrow. I have never used transporters before so i need some advice.
Is it customary to tip the drivers? if so how do you determine how much? i used intercity and the trip was from southwest florida to new york city, and they were pretty much on schedule.

Thanks in advance

 

[Steve-Indy]

Check your e-mail...and CONGRATS!!!