I know I'm not Kami, but her session was in the AM. Because of daylight savings time, her photo session time began before sunrise, whereas mine, which happened the day after daylight savings time ended, happened right after sunrise. Same time, just different sunrise times for the days.
I don't know when you are planning for your wedding, but you can look online and get a guestimate of when sunrise will be for your MK session day and if it looks like you will have an early sunrise (more likely the closer to summer you get, less likely the farther into autumn you get), then you can ask DPS, via your EM, if you can begin the session earlier, thought that will mean an earlier wake-up for you. Disney cosmo, if being used, will come to your hotel room at approx 4 AM for a 6 AM photo session.