Hit the ground running
If you're only there for a couple of days don't waste too much time searching for good games, so let's cut to the chase. Circus is D-10 and usually poor pen, so don't spend too much time there. The Legacy is a bit more complex, it's like a super market where you have to "shop" around. There's usually a whole bank of 6:5 SD, but check out the $10 and $25 mins.and you'll soon notice the 3:2 games as well as the DOA double decks. Similar situation currently exists next door at The El Dorado. The good thing about all 3 of those houses is that they are all inter-connected, so you can walk (via mezzanine level) between all three and have all the pits checked out in less then 45 mins. While at the El Dorado, continue south out the street level door and in 30 secs. you'll be in Fitzgerald's. If they're dealing more than 4 hands before they throw the deck into the ASM, then their game has improved since June. They have DOA, LS and 6C rules.
I would head south from the Big Three down Va. St (5 mins.) and hit the Siena, SD, DOA and Ro6/7. Continue south on Va. and first hit the Peppermill on your right and spend some time there checking out the pits. It's a large house so it'll take some time, but you will be rewarded. Another 1/2 mi. south on Va. (left side) check out the pits at the Atlantis.
If you follow the described plan you will hit the most playable games in town for the least time/ driving effort. There are a lot more venues around, but again, if time is of the essence that's the way to start.