I know a few people personally who've been told they'd have to pay more if they requested rooms that are opposite one another. And I've seen dozens of other people reporting the same. Biggest problem is that some people who call up to make a reservation knowing that they have to speak to an agent to make it happen, never even get told that they didn't pay the same bucket for both rooms.

It's only those who first book either online or don't think to request opposite rooms and then call up to make a change who often even realize that this is happening. If you call up to accomplish this from the start, rather than trying to change things after the fact, make sure that you confirm with the agent that you are getting the current bucket for both rooms. Or at least make sure that you know what the current bucket is, such that you'll recognize if you're about to be charged more so that you can question it.

It is possible of course that there really is only one room left at the current bucket, in which case you'll have no choice but to pay the higher tariff. But again, many people have unsuspectingly paid more than they needed to because either they and/or the agent didn't realize how things work.