I may be wrong but the ticket system is primarily to gauge support for planning purposes like seating, security and venue capacity, AND probably more importantly to harvest names and contact information.
This system gives the Trump Team instant feedback and was a key tool in determining enthusiasm.
Also- how many attendees are Dems? How many attendees didn’t vote in the last election? How many attendees are Republican? etc. Names can be cross referenced to known voter roles.
I always registered and had a hard copy, a download, or a photo image of my ticket taken from my lap top screen.
I think that when you register, the system automatically sends you a copy of your ticket from the electronic information that you provided in your request. This gives Team Trump a first check to see whether or not they can reach you electronically.
I’ve never been asked for my ticket.
Are you going to DC?
I am considering going to DC. I am not going to the ellipse in the early morning which is the venue requiring the tickets. I will just go onto the Mall to be part of the supportive crowd. I do not need accomodations so it can be a last minute decision.