You got a lot of good suggestions here, and I may just add a few thoughts about Sunset Valley, if you want to place a few venues there. Finding worlds that don't need Showtime or some of the other expansions can get a bit tricky nowadays.
The easiest way in SV would be to use one of the empty 30x40 lots and place "The Grind" from the library, a dance club you got with Late Night. It has a professional bar inside, which means it will spawn a mixologist. Here it is right next to the Crumplebottom house:
https://i.imgur.com/bKEUuhR.jpg
You'd probably at least use some terrain paint or floor tiles to alter the front yard, but other than that, you're set. And, maybe, you'll get the hang of changing up a venue after a while. The Grind is great for remodeling.
Here is another suggestion with using the the 20x30 spot that Ambitions uses for the junkyard for a dance club:
https://i.imgur.com/tFuJH8s.jpg
You will probably need Master Controller to remove the junkyard spawners there though.
Placing additional lots in town is a bit tricky. Other than far away from roads, there are only very few spots where new lots don't mess with routing. Here is a Local Watering Hole on a new 25x25 lot on the small road to the criminal building.
https://i.imgur.com/l4meGgy.jpg
And here you can fit a 20x30 and a 15x15 lot on opposite sides of the road:
https://i.imgur.com/k8VWkIU.jpg
I moved the consignment store there to free up the lot it blocks. Of course, if you are not beyond moving a few buildings to other spots, you get a few nice lots closer to the town center for some bars.
Have fun with the game!