You have great plans for your big day! But, it sounds like you may have over-planned. Decide what is most important and go from there. I doubt you can do the bfast and opening/wake up Tinker Bell all in one morning!
The resort monorail should be running at 7:00. Monorail to MK will run 30 min. prior to park opening. If it’s your first trip, I’d definately take the monorail. If it’s not then walking might be faster.
Is MK having Extra Magic Hour on that day? Just something else to think about.
Chef Mickey’s first seating is at 7am. For our family of 3, we usually allow 15 min. wait time for P.S., 1 hr. for eating/characters and another 30 min. for transportation/lines & bag check. I personally think with a large party the chances are slim that you will make it to the park opening ceremony with a 7:30 P.S… and that would be if you rushed! You’ll also have monorail lines to deal with at that time of day!
For popular PS locations, we always get there about 15-20 min. before our P.S. We have less wait doing it this way and are more likely to be seated at the time we were hoping for. They book many P.S’s for the same time and the first ones to show are the first ones seated. Also, if there were any no shows for an earlier seating, they will seat you right away.
Chef Mickeys is fun for b-days. For our DD, they gave her a specail bday place mat that all the characters signed. They play celebration music on the PA system and everyone in the restaruant waves their napkins in the air. All of the characters (except for Goofy) dance at your table and they give you a decorated cupcake. If you’re going to be at MK another morning, I wouldn’t worry about seeing the opening the first time. Enjoy your special bfast and take it easy. It’s not every year you get to celebrate you bday with the mouse!
You’ll find long lines at the entrance 30 min. prior to the scheduled opening time. Keep in mind that it is not uncommon for them to open the park earlier than the announced time. We’ve been there many times when they’ve done this (never on an extra magic hour day).
Also, to be the first one to Tinkerbell’s Treasures you might have to already be in the park at opening. We did this once when we had a 1st seating breakfast at CRT. They have a rope drop in the castle at park opening and you are just steps away from the shop. Cute expreience and we got a certificate for the scrapbook.