Hey there. We did something similar as we moved our May 2020 trip to May 2021. Since you had a package with tickets, they were only able to book you (like they did for me), a basic package without tickets until Wednesday of this week. I was able to reserve park passes today but only because I had other tickets attached. We can call on Wednesday and turn our basic package into one with tickets. Even though I made park reservations today, I also want a package with tickets to add more days since PH is not allowed yet. Hope this helps.