BRING PILLOWS!!! Of any piece of advice I've learned...this may be the very most important. Your entire comfort depends on this. Yes blankets are important but you're still just gonna be laying on the ground...and soon enough it will feel like torture! Unless of course you were smart enough to bring a pillow. And might I add, the prop up pillows are best. This way you get to see AND be comfy.
Something like this would suffice.
ARRIVE EARLY! It's hard to know when exactly your movie will start since dusk is a pretty broad term....and besides that the definition constantly changes throughout the course of a summer anyway! In this case, it's best to err on the side of being too early than being too late for two very important reasons. It's a rookie mistake to underestimate the importance of a good seat. Arriving early ensures you can get a prime spot with a good view. But more importantly, arriving early is crucial so you don't miss necessary exposition in your movie! Missing the beginning of Vertigo, and American Graffiti (which I had seen before, but my mind was foggy on the setup,) as well as Touch of Evil which I'd never seen, really took me a long time to figure out what was going on...and hindered my viewing of the film. Best to be there early so you don't miss anything!
FORGET TO BRING TREATS! Luckily most venues have some pretty cheap concession stands, but movies are always more fun with treats. Plus this along with the drive in, are one of the few venues where you can bring as much food as you want. So take advantage of it!
EAT A HUGE MEAL BEFOREHAND. You never know how you're gonna have to position your body to get comfortable with these things. In the case of American Graffiti, I had to lay on one side the entire movie just to see the screen. That might not have been a big deal if I hadn't just eaten a very delicious and filling meal at a restaurant not too long before. I don't think food is supposed to digest laying on your side like that...so to avoid a case of sore guts, you might as well bring your dinner with you!
Yep. That's what I learned. Sure the season is almost over...but take advantage of this knowledge I learned the hard way while it lasts...or tuck it away for next year.