I just cleared MEPS last Friday and honestly it wasn't as bad as I expected it to be (compared to how it was 10 years ago when I was enlisting). I had to submit ~100 pages of prior enlisted medical records/issues (back, knee, hearing, VA disability, and emergency room visits) and heard back in about 2.5 weeks that no waivers were immediately required. Medical interview in person was straightforward and painless because of all the documentation I provided.
I was worried about the AFVT depth perception due to failing it in 2009 and nearly losing my enlisted aircrew contract (despite passing 8 Navy flight physicals including depth perception after that), and raised this concern to the eye tech while in line for urinalysis. He pulled me aside and let me do the eye portion of the exam with him with the lights dimmed and as much time as I needed to get through lines A-D. He also mentioned that as of last week they were supposed to be using the Randot test (test with glasses which I found MUCH easier when I was a fleet Marine), but hadn't switched because no one was trained on it yet. I'd assume in the next couple weeks they will be changed over completely, but ymmv. Hope that alleviates at least a little stress.