Barrett is a killer lake to fish. I have fished it many times. (If you have any other questions PM me)
The lake is very full right now and is great from a kayak. (Supposedly they are going to start selling off some of the water and lowering the lake level... lets hope thats not for a while.)
As for the reservation; the reservation you buy through ticketmaster is for a boat, 4 people and 2 car spots. Just as a heads up the "car spot" thing is a joke... if you park on Pigs Point they do not care how many vehicles are in the party.
A cheaper option is a "tube spot", people who do not have a full party will sell off their tube spots to kayakers and float tubers. The usual rate is about $20.
If people are planning on heading out there, throw up the dates you're going. I have been intending to go there soon. I've got a few new bass rods and a new Curado that need to be broken in!
Here's an old report of mine if interested.
http://www.bigwatersedge.com/bwevb/s...ad.php?t=10395