I am trying to go for "fifth night free" I already booked a Monday-Thurs (3nights) and now I can book the Friday night (5th night) but the Thursday night isn't showing any availability. What's the best way of going about this? Can I book three nights and the one night separately and hope the thursday/4th night opens up? If I do go that way, can I easily call up and merge all the reservations together making the only night I don't yet have the "5th free night" or would Hilton have to cancel both reservations (risking not get them if they don't go back to inventory) in order to do it?
TIA