Get a folder or binder. Put in it: flight info/tickets, rental car info, resort reservation info, PS times and numbers, etc., and any other ressies you may have. AND A PHOTOCOPY OF THE FRONTS AND BACKS OF YOUR TICKETS.
Keep this folder with you. Don't check it with your luggage.
I also make a copy of our drivers licenses, medical cards and travel info. I leave this copy with a trusted neighbor or relative. (I also include copies of our ATM and credit cards, but not everyone may be comfortable with this.) This way, you'll quickly have access to this info if you need it. This info can be invaluable if anything "nasty" should happen to a purse or wallet on your trip.
Print out and tape INSIDE each piece of luggage - your name, a cell phone number, flight info and your destination resort, its address and number. And the dates you'll be there.
This may seem like a lot of work, but it can prevent some really big headaches.
DisFlan