I can't really help with BGW too much since I've only been there a couple of times...SFA though...
First off, don't eat in the park!
Try to get on Batwing first, then Superman, Joker, Two Face, SLC(ewww), Roar, and then front seat on Wild One!
If you want to do other rides, and you see Typhoon Sea Coaster running, get on it, I've been to that park like 20 times and seen it run ONCE! Is the Hammerhead ride even still there? Same goes with that one.
Hopefully they'll be running multiple trains for you and the crowds will be low. If you can try and ride Superman and Wild One at night as they heat up throughout the day!