The first thing I would do is call out for my overtime shift that night. I'd make it the most memorable rant about the screwed up stuff my employer does. I work for a police department, so everything is recorded. I'd make it a phone call that gets replayed an awful lot.
Dh first put in $5 a few weeks ago with a group of coworkers. Every week they've been "reinvesting" their earnings. If they win, they have already determined an order in which they each take turns, um, "using the facilities" on their boss' desk.

As you can tell, dh and I are very unhappy at our jobs!!!
At first I said the first thing I'd do is get pregnant.

But we want to take our kids do WDW for 3 weeks right off the bat, so I guess I'd wait till after that. I want the Yacht Club, and dh wants Grand Floridian. I guess we can do a split ressie.
Normal stuff, like pay off bills. I would love to have the feeling of owing nothing to anybody. That in itself would feel like a drug high right now. We'd move to Florida. MIL just moved there a week ago, and I already miss her so much! lol Make sure our family members are set, build a nice house for all the kids we'd be having and adopting.
Make sure BIL's scholarship is well funded. He was killed by a drunk driver almost 5 years ago, and we started a scholarship in his name. I'd donate a heck of a lot to the HERO Campaign and other drunk driving charities.
I'd finish my degree just to show my kids the importance of education. The only thing stopping me right now is money. But I'd become a SAHM, probably serving on the board of charities. I'd love to open some nice indoor play areas for toddlers that are actually clean and not anything like Chuck E Cheese. I'd invest in real estate and franchises like McDonalds.
I'd travel. Oh heavens, how I'd travel! Dh wants to go on a real safari. I want to tour the castles of Europe. I always joke that I'd be the only millionaire still eating chicken nuggets and grilled cheese. But I'd definitely hire a personal trainer to whip my butt into shape.