Hi, I think there is jobs for any style of music/performers, remember that Arizona has almost a 18-25% of increase of population every year.....and not only seniors move, people of all ages....you must find the proper channels.
I do play for the senior crowd,I know a very good porcentage of performers in this forum do just as well.
Here in Arizona, there are areas in is more country the style, in others the foxtrot, latin, polka, etc...most places have a board to indicate you (performer) the style/rhythm to be play (not the songs).