I have a trip to Milan coming up and managed to snag tickets to the Last Supper (after a very early alarm and stressful hour or so wrestling with the official ticket website a couple months ago) but am having trouble finding details about logistics now that it's getting closer. I know we have to be at the ticket counter at least 30 mins prior to our appointment and present our purchase receipt and IDs. Our tickets are for 4pm. How early should we get there to make sure we're at the ticket counter by 3:30pm? Is there typically a long line to deal with? Also, will our US drivers licenses be enough or do we need to bring our passports?
Finally, I've seen mixed messages about taking pictures inside. I see that the rules say no professional photography without permission and assume that means we're allowed to take pictures with our phones (without flash) as long as it's for personal use?