there was an earlier post regarding updating your passport details before flying, from what i have read this has caused some confusion, so i have copied and pasted the same post that i have put on there as i have just booked for september and were givven the following guidelines,
i have just booked to go to the Holiday Village in September with first choice, i have just read the instructions of the booking and mine say the following,
* * Important API Requirements - All passengers must comply* *Airlines are now required to provide passenger details to government authorities in advance of travel for the purpose of border control. This includes information contained within your passport.
You must provide this data between 6 months and 24 hours prior to your departure by visiting http://eapi.thomson.co.uk quoting booking reference number *******. Customers travelling within 4 days of booking will be unable to use the online facility, so will therefore be required to provide the necessary information upon check-in at the airport.
Failure to provide this information may result in you being unable to travel.
Get more information on API
I hope this information is helpful