You get UA and DL travel. UA is pretty much the same as DL benefits, but you have to pay for first class, and BUDDY PASSES ARE $$$$$ (not really worth it).
SBP has become a senior base with the latest SBA closure. SLC is quite possible now with all those transitioning to the CRJ in the next few months.

As for day in the life of reserve, the best person to ask is NEWTY, he knows what its REALLY been like on reserve on the bro.