The profile gives you insight into your account. Click it to scroll through your Profile, Gift Cards, Accounts & Settings, Purchase history, Rewards,  Favorite Venues, F&B, Offers, BookASmile Support & Settings, it has all of it.  

All set for the movie, click the 'Profile' go-to 'Purchase History' flash the booking details and you're done.  

Note - You can update all the details under profile, except your email Id.