I agree, that it would not be appropriate to bring up this situation at the wedding.
Unfortunately, because of the dog I am not staying in ciy of wedding and I cancelled the room reservation so I did not receive a fee.
The wedding is at xx time at xx location.
I had planned to get a gift on my own but if you would like to buy a gift together, that is fine. Their registry information can be found on their website at www.website.com. Please let me know what you pick!
See you at the wedding tomororw - it should be fun!"