We were at DL/DCA May 10, 11, 12 & 14th and at USH on May 13th, but like it was already mentioned it's close to Memorial day so it may be different. When we went the least wait time was 5 minutes and the most was 30 minutes. DCA was only open from 10am-6pm. Going when the parks opened you could ride a ride multiple times with only a 5-10 minutes rate or in some cases walking right on. Toy Story Midway Mania has no FP so keep that in mind. At park opening there is maybe a 10 minute wait. Afterwards it was consistantly 30 minutes when we went.
USH we went straight for the lower lot. If we wanted we could of rode The Mummy and Jurassic Park multiple times with little to no wait just when they opened. At the time they were not running a lot of the lines. They had only about half of the Simpson attraction lines open so the wait was 30 min in the afternoon.
Have fun.