Sounds like fun! Denny’s is one place I have heard of. The only reason being that my daughter got to go for a weekend trip to Swansea in Wales with her friend’s family last summer, the sole reason being so that they could go to Denny’s, since it’s the only one in the UK. Her friend’s mother used to live in the US and had apparently gone on about how much she missed Denny’s…until she found out that there was one in Swansea!