Originally Posted by
lowfareair
I have not, but my thoughts on it:
1) Citi gives you the 4th night free at time of reservation now through thankyou.com. You can't use the concierge any longer, and as such can't use special rates or earn points for the bookings, but it does mean you don't have to hope they'll give you the credit.
2) They don't know you are staying the middle night, if there is any issue, tell them you are doing an overnight to another city in the middle of the trip
3) I would be honestly surprised if Citi codes their website to flag anything but true back-to-back stays, and even that I wouldn't bet that is actually coded into the website
You should be fine.
You can use the concierge to change previously made bookings. I made about 20 before the switchover, as long as the confirmation number remains the same, I will still get the 4th night free (as well as elite credits). I just changed the dates successfully for one, but I couldn't use an updated rate now that it dropped $50 (that would involve cancel and rebooking and therefor not eligible for fourth night free).
They usually request the folio from the hotel (or from me), that will show the middle night if they are looking for it. Question is whether they will look for it.
If I get the 4th night free, it's on a reservation at $359 per night. If I cancel it and rebook (to take advantage of the lower rate), I will pay four nights at $311 (plus tax). So it's an extra cost of $58 per night for four nights if it isn't honored (call it $232, ignoring tax), vs. saving ($358-3x$57=$187 ignoring tax).