I just got mine for our June trip this morning. I was afraid I wouldn't get much, but it wasn't as bad as I thought it might be. Definitely much, much worse than usual, but not as bad as I thought. We have an 11 day trip, so of course, days 7, 8, 9, 10, and 11 were open. Those who have 5 or fewer days are going to have fastpass disappointment. Those who are staying off site should expect to have fastpasses for Muppet Vision, Barnstormer, It's Tough to Be a Bug, and Journey Into the Imagination- but not much else.
HS is the hardest. I would suggest getting those first. Even day four had no top tier attractions available at all.
For day one at MK, it was slim pickins. None of the big ones available at all, even at night (Space, Splash, BTMRR, SDMT, PPF- all gone). Got Haunted Mansion, Jungle Cruise, and Meet Mickey Mouse.
Day two at AK had no FOP or NRJ, but I did get EE in the afternoon. KS also available, but not until 6 pm.
Day three at Epcot was better. All three of the Tier 1 were available, but nothing for TT until 3 pm (we got Soarin' at 11:15- Frozen was available at noon).
Day four HS was slim pickins. None of the top tier rides available. Got ToT, Star Tours, and RnR.
Day five at AK got Navi, EE, and KS. No FOP available at all on Day 5.
Day six MK was easy. Got Splash, Space, and SDMT all pretty early.
Everything after that was easy.
So unless you have a 6+ day trip, you will likely have some disappointment. There will be rides you won't be able to get. Nonetheless, I think I will be quite happy if the parks are open and we can actually go and feel some sense of safety and security. That has yet to be determined.