Yes, they meet continuously. You can see their times on the app.
At 10:13 last Saturday (so 13 minutes after Launch Bay opened), the posted wait time for Chewbacca was 20 minutes and Rey was 10 minutes. However, we actually were only behind one other family for Rey, and no one was behind us at all when we went in, so my daughter spent several minutes with her "learning to fly the Millenium Falcon." When we left, she only had one family waiting again. Chewie's side had a real line the whole time; 20 minutes was probably close to accurate.
The Dark Side has Kylo and Darth, and I saw people in both lines but didn't actually walk by to see the wait times.
If you can go in the first 30 minutes that the Launch Bay is open, the lines aren't usually too bad.