(Same situation here - RO before our package)
Just wanted to add that when we stayed at Pop in Oct. we were able to get our tickets activated three days early at Pop the night before we went to the parks. There was however a miscommunication and Pop didn't activate my parents' magic bands (we had a two-room reservation and they were in the other room), so we had to activate their bands at guest relations at MK. That part didn't take but a few minutes.