We would love as many tips we can get! We only have one day in the parks and we are going to make it count! We will be going in February when it is slow... Please share any fun tips or must do's on our busy/fun/magical day!
If the goal is to visit every park and your plan is to see just your favorites, this can be a lot of fun. If you really want to savor the day, I'd switch to just a couple parks. Now, if you want to do every attraction, there are couple of guys who just did that and hopefully someone knows where to find that article on how they did that.
Basically, to have a good day doing this, you have to plan. Park hours, which attractions you plan to do, really knowing the park map, etc. you have to agree upon your goals in advance, otherwise someone gets angry when you skip something to stay on schedule.
My main tips:
1. Wherever you plan to start, you really need to be there before the park opens. Don't underestimate the time it takes to get to the park in the morning.
2. Travel light. Try going bag free to skip that line.. But if you can't go bag free, at least keep it light to avoid getting tired of carrying stuff.
3. Don't leave a park at closing time to get to the next one unless you are driving your own car. Right at closing can slow down Disney transportation time due to the number of people getting on.
4. Dress for the weather forecast. It's likely to be cold early morning or late in the evening. Be sure if you are going to need a jacket that day that you can tie it around your waist.
5. Plan food. TS takes time, but if you want that as a break, then make the ADR. But if my goal was to hit a lot of attractions, I might skip waiting for something with a longline and hit a CS place with less line, even though it might not be my favorite food spot. But, a priority for me is a Dole Whip float each trip, so I am waiting for that regardless!
6. Be prepared to change plans. You can't waste forever in an unexpectedly long line because a ride breaks down. Be prepared to move on and skip a must do.
7. Making this a great day is really about the mental state of everyone in you group. You just can't start the day with conflicting opinions about how the day is supposed to go. Yet, you are also going to need flexibility. I've had crazy long days with my boyfriend at Disney that have been awesome because we were both in "go mode" and quick to adapt moods. But if one of us turns into a crank, you have to read the tea leaves to adjust and still make it a great day. We turned a bad day at MK one day into a good day by simply deciding to play SOTMK all afternoon instead of riding rides. What had been a frustrating day turned around by changing our goals.
Good luck! I haven't done all four in one day yet myself. Just three! Someday I'll do it.