My TA just books the room package, emails me the confirmation and then collects the balance of my payment when due. I do the flight, all my ADRs, FP+ and have complete control of this including magic band through
MDE. My TA simply gives me my reservation # and then I log onto MDE, type in the reserv# and off to the races. I suppose a few TA's may do some of these things for you if you asked (my TA explained that she has a few clients who want her to make their ADRs online) but most TAs would be relieved to simply book, get their commission then hand the extra work to you. I change my ADRs up often so I am happy with this arrangement.