It will be interesting to see how rides in general work out during this time. (And hopefully a lot of these measures are VERY temporary).
While, you'd expect, that the number of people in queues will be lower because of reduced capacity (either forced or just less people wanting to vacation there for a while). BUT, those people are spread out in the queue, which means it will take longer to get people onto ride vehicles because they have to take a few extra steps to "catch up".
What do they do about normally crowded pre-show rooms? (like Haunted Mansion and MFSR) If they don't pack those to capacity (usually you are shoulder to shoulder in those), won't the ride be loading slower? Without the pre-show those attractions lose a LOT that makes them unique.
If some attractions and restaurants are closed .. even if park capacity is lower, people will still be "crowded" in ride queues because just less places to go.