It’s been a little while since I’ve been to Colorado for AP. But stay hydrated and prepare for lots of walking at high altitudes, Black Hawk/Central City is something like 8,000ft above sea level. and it’s mostly a walking type of town, it would be really tedious to drive around to all the parking lots. I don’t know where you’re staying, but parking at Bally’s is usually a good option since it’s pretty centrally located.
Notes from my last visit; Ameristar was pretty barren, Lodge was mildly paranoid about slot hustling and Monarch tends to get new games early from IGT.
I do know that Black Hawk tends to be a lower RTP market compared to some other destinations.
That’s from over a year ago though, no notes on Cripple Creek. There are two tribal casinos that often get overlooked down in the four corners area, but it’s pretty far out of the way for a short visit to Colorado.