Alright, expert in da house.
The rides on a weekend in the summer will be, as expected, pretty shitty. I'd say you should expect a 2 hour wait for big rides such as Millennium, Maverick (best coaster in the park), and possibly even near 3 hours for the Dragster. The Dragster is cool and all, but I honestly wouldn't bother unless you get lucky and see it only has an hour wait (usually due to the track not responding correctly and the park closing the ride down for a few hours).
Here's what you do...er, here's what I do anyway, for the best possible experience.
1) As soon as the park opens, everyone usually bolts for Millennium or the Maverick or the Dragster. Don't do that, you'll be in those lines for ages. Go straight to the Raptor, you'll only wait 20-30 minutes TOPS. I've been able to get through the line in about ten minutes before.
2) Right after that, go towards the Max Air, probably the most enjoyable all around ride in the park, if you ask me. Line won't be long, probably only 20 minutes.
3) From here on, it's up to you, but my friends and I like to head alllllll the way to the back of the park and work our way to the front throughout the day, unless a long line obstructs that plan (which it usually does). The Magnum is a fantastic old coaster that will make you giggle like a school girl near the end, and that wait is near obsolete for it. The Gemini is okay if you have friends that go on the other train (it's like a race). Otherwise its underwhelming.
4) AVOID LIKE THE PLAGUE:
-Mean Streak --- one of the most painful rides ever.
-Cork Screw --- unless you want your neck broken
-Blue Streak --- kiddy ride
5) For lulz, go to Disaster Transport. It's always malfunctioning and the so-called "theme" to the ride is hysterical.
6) Once you make your way up towards the front of the park again (you're inevitably going to have to bear a multiple hour wait for the Maverick/Millennium/Dragster---it's your call, but I'd go with the first two and skip the last), ride the Raptor again. It's a ton of fun and never has a long line. It tops the day off quite nicely.
Oh, and don't even bother with their food, it's terrible. I'd just eat a huge breakfast and then afterwards get a late dinner somewhere outside of the park. Bring snacks instead.
You'll love it even if you have to cope with waiting. Best theme park around, bar none.