minnie,
im guessing your talking about the gm for mk if so me and my husband (just married) we lucky enough to get this sometime in the third week of aug this year. we were picked first thing in the morning while we were walking down main street. I know they pick 2 people for the front car and a family for the second. I would see if you can request a few days early at the town hall. One other thing to think about if you cant get the grand marshall is to request to open the park at guest services. my sister did this and i can say it is so memorable. any questions send me a pm. GOOD LUCK
Kim