My husband and kids would sleep until noon at Disney World if I let them, and they're ALL cranky when they're woken up in the morning. I've learned not to plan any early mornings, unless there's a specific and very good reason.
I usually get up by 7am and get myself ready. I'll open the curtains a little bit, and I don't go out of my way to be super quiet. Once I'm ready, I wake up DH and instruct him to get ready while I go get coffee. I take my time and wander through the resort, enjoying the peace of not wrangling my whirlwinds of children, and maybe stopping into the gift shop to browse, without having to say "Don't touch that", "Put that back", and "No, we're not buying that" every 1.5 seconds.
Once I get back to the room, I turn on the TV and all of the lights, and start announcing that it's time to get up and get ready. If I'm lucky, DH will have actually gotten out of bed by then. He's best given a wide berth first thing in the morning, so I let him do his own thing as he gets ready, while I get the kids up.
I first start by trying to wake up my 7 year old son. That generally ends with me physically sliding him off the bed and onto his feet. At that point, he's usually awake enough to start getting dressed.
If my 3 year old daughter hasn't woken up yet, I'll actually get her dressed right there in bed, while she's still asleep. By the time I'm done, she's reasonably awake.
Once everyone is dressed, and has their hair and teeth brushed, we head out. We're lucky if we get anywhere by 9:30am. 10am is more likely. I'd like to get an earlier start, but it makes for a miserable morning, so it's just not worth it. We do tend to stay out later in the evening though.