A valid passport book is required to enter Mexico. If you still need a passport please visit link below: https://travel.state.gov/content/travel/en/international-travel.html
Check-in is at 3pm and Check-out is at 12pm If you arrive early be sure to pack an additional outfit or swimsuit, as you'll have the opportunity to explore the resort, enjoy a drink, and even take a swim. The hotel will store your luggage until your room becomes available.