I'm going to confirm that the date of registration is July 20.
Source:
First time I attempted to sign up for Dopey was for Dopey 2019. That is when they moved the registration date when switching away from active, and it was July 19. Which is when my husband and I were on vacation in Cartagena, Colombia and had no internet access. A friend had to get my bib, then we had to get rundisney to move it to my account, etc etc. Then I broke a hip in training and couldn't do it.
Second time I attempted was for Dopey 2021. The number of bibs was capped. I didn't get one during pre-registration but my husband got his. Had to try again, and missed again, BUT a friend got one for me. Same deal with having it transferred over, etc. Dopey goes virtual.
It is only fitting that this year, after 2 attempts, the registration would be July 20: My birthday, anniversary, and the day I am at discovery cove snorkeling with no internet access.