I'm obviously biased, but I feel like it's worth the trip. We've recently made it to where you can come down and enjoy a beer without taking a tour. Our current draft list: http://www.drafster.com/boulevard_tasting_room/
Excellent news! Nothing worse, as an out of towner, than being told you have to take a tour to have a beer at a brewery. Oh, and tours are booked up for a month. Ugh!
Our public tours don't book in advance. Spots for the day's tours are released at 10 am each morning.
I tried all of the taproom-exclusive beers when I was there three weeks ago, and there wasn't a below average one in the bunch. The prices are very reasonable for flights, too
In my experience, every brewery tap room is worth going to. You will never try their beer in a fresher manner. As in aside for Boulevard specifically, it is in a lovely building that is filled with their history. If you can get a tour, please do. There are not many breweries that have expanded in the fashion they have and the amount of hidden gems on the tour are amazing (drawings of old labels, old equipment, etc). Plus, you know, Tank 7.