Originally Posted by
MSPeconomist
If the hotel wants to avoid accepting the corporate rate during certain periods, it needs to set up its reservation system not to offer corporate rates on such dates. Otherwise, once the reservation is confirmed, it should be viewed as a binding contract on both sides.
However, this won't help the OP to have a bed in which to sleep during a period when a foreign city is likely to have no hotel solace available.
Assuming that this is a business trip, turn the issue over to corporate travel. It would seem to be step one in getting an exception for a higher rate.
Except that it isn't.
Corporate rates are a business-to-business matter and subject to a contract between the two businesses. That contract will specify whether and how the property is to handle date exclusions and the like as well as the employer's remedies.
One also presumes that it is OP's employer which is ultimately tagged for the higher rate and thus for it to determine what to do.