I'm really frustrated that on the iPad, I can't long hold on a registrant and switch into a mode where I'm editing their registration information.

What if they show up for the event with a third person as a second guest, but they online registered for 2 people including 1 guest?

What if an online registrant lied and registered as a member rate? At the door we want to change their registration ticket and swipe a card appropriately to collect the balance of funds.

What if an online registrant was a member and registered with a $0 ticket price, but at the moment of check-in decided they wanted to get the book too?

We can't easily switch their registration fee from "member" to "member with book", and then process their payment during check in.

That's really irritating.