Went in yesterday-friday around 11am- took 3 hours to submit my papers-1 hr in line, and 2 hrs inside office- now just waiting...when you submit your letter " bajo protesta de decir verdad"= make sure you type it- I had written mine, and had to re-do it
bt, did you decide to do it yourself, after all? Your case should be pretty simple and straightforward: you're about as well set for permanent residency as anybody I know here.