This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I prefer not to modify search results, because even CRS take bookings only within 48 hours, they can advise customers about hotel rooms available after booking deadline. "48h rule" can be checked on-the-fly, for example it is possible to disable "Book" button when unavailable room is selected.
In my search results I display 'bookable' rooms with a different background colour to those that are not available for booking at that time whether its because they are already booked or fall out of the 48 hour period.