Here is an example of a recently booked trip to Puerto Vallarta Mexico.  As you can see the guests booked 24 days prior to depature.   

Purchase Date: 2/2/2009
Travel Consultant: Laura
Gary & Sara from Illinois USA

Tour Reservation
Booking Status: Confirmed Duration: 7
No. of Passengers: 2
Start Date: 2/26/2009 End Date: 3/5/2009

Tour
Apple Vacations
Tour Name: Apple - Puerto Vallarta Description: Rt air
ORD,Transfers,7nts
Penalties will apply to changes/cancellations

Flights
2/26/2009 Depart Chicago O'Hare (ORD) at 6:00 AM
2/26/2009 Arrive Puerto Vallarta (PVR) at 10:30 AM
Miscellaneous: Outbound, Class of Service='A'
PROPER PROOF OF CITIZENSHIP REQUIRED

Hotel
Puerto Vallarta Hotel
Check-in: 2/26/2009 Check-out: 3/5/2009
Room Type: TBA
Description: TBA

Flights
3/5/2009 Depart Puerto Vallarta (PVR) at 11:30 AM
3/5/2009 Arrive Chicago O'Hare (ORD) at 3:30 PM
Miscellaneous: Return, Class of Service='A'
Transportation
Airport to Hotel Ground Transfers

Travel Insurance Description: Insurance Declined
Purchase Details:
...................................................Base........Tax.......Total
Reservation Amount...................1,724.98....505.40..*2,230.38
*Includes Agency Processing & Handling Fee - Non Refundable