Before we figured it out, that we were running ourselves ragged, aka Commando Touring, we would hit the parks wide open the 1st day. So from the start we were worn out. After traveling, it takes something out of you, but you dont mentally realize it cause you are in the Magic of it all.
So now, we relax in a couple different ways. We either take it easy for the day, enjoy the resort, swim, rest then head over to Ohanas for dinner. We try to time it where we can see Wishes. They turn the lights down, turn the sound of the show up on the speakers and then the the fireworks begin. Its a magical way to start the vacation and immerses you into the spirit of being in WDW.
Another cool way to start our stay is head to Typhoon Lagoon for a few hrs. You dont have to do near as much walking as the theme parks and the water seems to relax you. Then do dinner as mentioned above.
Then turn in as early as possible. It makes that 1st full day so much better.
Have Fun!!