I got this information from a poker bud at work who visited Harrington this week.
They are offering limit and no limit holdem anywhere from 2/4 to 40/80. Also, they will have Omaha Hi-Lo and 7-card stud at opening which is today.
He said that the poker room manager informed there would be daily tournaments, but not during the first month, as they need to get all of their ducks in a row. Apparently, there will be high hand jackpots as well as bad beat jackpots. However, only time will tell.
As for location, if you were staring at the casino from the parking lot, enter at rightmost entrance, look for the high limit room on the right, and follow the signs to the poker room, which is near the sports bar, and horse race track, also known as the "grandstand". If you go up an escalator, you are headed in the correct direction.
As far as table games are concerned, the limits were $5 min, $25 max. Standard games include Blackjack (pays 3-2), Craps, Roulette, Baccarat (big table and mini), Pai Gow Poker. Carnival games include Three Card Poker (progressive), Four card poker, Let it Ride, Ultimate Texas Hold 'Em, Crapless Craps, War, Blackjack Switch, and probably some other games I haven't heard of.
The friend also advised that the Pit manager said they would raise max limits once they got the room under control. Personally, I hope the $5 minimums don't go any higher, since I don't do $10 tables.
Lastly, I'm not affiliated with this site, but a good place to learn the table strategies for the carnival games is
http://wizardofodds.com/
Common comps at the Harrington casino include monthly free buffets, and free slot play. There is no hotel on site. I imagine the buffet comps would be discretionary at the tables, meaning you could probably ask the pit boss to get you a coupon. The buffet isn't all that great, but they do have seafood on Wednesdays.
I plan to scope it out this weekend, and will report back if I find anything else of note. Do you have any questions for the pit or poker bosses?