Help for a UK traveller

[orangetiggs]

We are getting marreid in disney in sept and I'm trying tow rok out the best way to book one night at the grand for the night before the wedding. We have a room discount with the wedding of $307.13 including tax

Is this a good rate or can I get it cheaper??

Any help would be great as we normally just book a package through a UK tour operator

Thanks in advance