Absolutely painless procedure. Had an 8:30am interview, showed up at 8:00am and went straight up. Had a few people in front of me, but it took about 15 kind to get called up initially to hand in paperwork. Sat back down, 15mins later had the "interview". Wasn't really asked any questions really, mostly just what my fiancée is up too etc and then received my approval slip. Less than 40 mins from arriving to being approved! Woo hoo