Let me echo others in saying that Fallen Oak is a very solid course. I played it last year under similar circumstances to Frank's. I was already in New Orleans for a conference, and I was very happy that I added a few days to the trip play Fallen Oak and see a little more of the region.
There are a lot of elevation changes, some varied/strategic holes, and some really fun, challenging greens. The course has a "big" feel to it, not unlike Bethpage Black. It also has a quiet, secluded ambiance that you would typically only experience at a private club with few members. It's not overly penal. My recollection is that good players should lose few golf balls, but it's hard to make birdies, not unlike a Doak course in that respect.
Aesthetically, Fallen Oak looks like a Fazio course, i.e., you wouldn't confuse it with a minimalist effort. Nonetheless, Fazio used the land well and created some really fun, interesting, challenging holes. The course is very walkable, and the overall flow/experience of the round is very nice. 7 and 16 still stand out in my memory as really fun, strategic short par 4's, and the green on 16 is particularly memorable. This is one of the better Fazio courses that I have played (although, in my experience, none are bad but none are world class). Overall, I would rate it comparably to courses like Butler, Olympia Fields, Whistling Straits, and Crooked Stick--long, challenging courses designed for tournament competition but with a lot of redeeming qualities.
As a side note, I should also point out that the service at Fallen Oak is exceptional. I usually don't care about this kind of thing (and if anything, I dislike the over-the-top service at a lot of courses), but my overall experience on and off the course was great. I played on a rainy day with some chance of lightning. Before my trip, the weather forecast was good, so I was unprepared. They lent me rain gear and an umbrella, and they regularly drove out to the course to bring me dry towels and update me on the forecast. I also remember having a great lunch in the clubhouse sitting at the sunken bar and overlooking the scenic, brutally difficult 18th.
Frank, have fun and please report back!