GYBE wrote:My Dad and I don't really get along, it's not very believable.
I don't have to bring the casino into the lie here, just anything that gets me out of going out with her.
By decieving her, I'm sparing her feelings. And in that way, I honour her.

Me and you GYBE. We got a lot in common.
Whenever I have this conundrum I always tell my g/f...
"Honey, I know we have a night planned tonight, but I wasn't able to get accomodations where I wanted to take you. Tommorrow is better, is that ok with you?"(acting as if it was a surprise, don't tell her though)
She'll be so happy you actually planned something she'll have no other option of saying yes.
Then go buy some movie tickets(a movie she would like, of course) and some time during your date tell her the movie was sold out and the restaurant you were going to didn't have a reservation convenient to the time of the movie you wanted to take her to. The restaurant is like icing on the cake, you don't have to include that. Of course you can flip flop the movie and restaurant and just use one or the other.
You avoid the date tonight and hang out with your boys while making her even more happy.