The Las Vegas Marina Hotel and Casino:
A close-up at the meal prices on the sign:
Shrimp cocktail for 49c sounds good to me!
If you wanted to stay near the airport, then you had the Airport Marina Hotel:
How about a close-up of that couple on the left?
I've not been to Las Vegas, so I don't know if either hotel still exists today - or if so, if they've been remodeled to reflect current tastes.
And as for Mr. and Mrs. Sophistication, I hope that they've moved on from 70's fashions as well!