Thanks a ton! Your very helpful!

So do the accounts link based on the reservation number?

So how do I link my account and my sons account so he can reserve rides for his family at the same time I am for myself and hubby?

Ok.. you said each account/device.. but they would all be on my account since im purchasing everything right? Can my account be logged in to 2 different devices at once trying to book for 2 different groups at the same time?