Patrick,
If you can already see 20/20, I would say that's outstanding. My eyes took longer to come around, but I ended up with 20/13 vision in each eye and no complications. As far as the MEPS physical/waiver process goes, I wouldn't worry too much about it if you aren't experiencing any complications. I was really worried about the physical, but it turned out to be a breeze. My recommendation for waiver didn't seem to slow down my application either. I had a response from the CNRC within two weeks of sending the packet up to Tenn.
There are a few things that I would recommend you do, however. First, get your MEPS physical as soon as possible. If your pre-surgery eyesight falls into a certain category (I think better than 3.00 diopters or something) you can get your physical 90 days after your surgery, otherwise you have to wait 6 months. My recruiter wasn't up to speed on the logistics of this rule, and I ended up loosing some time. Stay on your recruiter's ass...tell him that you want a physical after 90 days if you're eligible. Make him work for you! The reason that I say this is because I have heard of PRK candidates getting shuffled through MEPS more than once...maybe because they got a nervous doctor...I don't know. Second, ask your civilian eye surgeon to include a cover letter with his medical records basically stating that you are good to go and that there is nothing to worry about. I noticed during my physical that people seemed to take interest in reading my doctor's "opinion" on my eyes in addition to the black and white data for pre-/post-op conditions.
Hope this helps. Best of luck to you!