I was always wanting to do this once, but not sure what the best set up would be.

Would a empty theater, or at least almost empty theater be the best?

Back row?

Bring own blanket?

Time of day or night?

Although getting a BJ in an semi full theater would be very exciting too.

Anyone have some experience or imput?

I don't think I want to try anything more than that, and especially not actual sex.

I'll share what worked for me with getting hjs, maybe you will be able to apply some of this to trying actual sex.

Best times to go: 11am-4pm.
Times to avoid: Fridays, Saturdays, discount days.
Best places to sit: the very front row to the side, the couple seats on the sides (you sit on the inside), back center.
Or, anywhere away from people, of course.
Avoid sitting close to the rails/stairs/exits.
If there's a couple in front of you, sit directly behind them a few rows back so you are in their blind spot, and they will have to completely turn their body to see what's behind them, and not just their neck.

Never got caught.

i remembet plenty of hjs and bjs from the gf back in hs.  man it was so hot and kinky.  memories.......

When a teenager back east, met a gal on a blind date who insisted we go to a closed balcony in the movie theater in NYC.  There, she proceeded to suck my cock through an entire film!  Have no idea what the movie was.  Unfortunately, I don't think there are many closed balconies these days....  As to the girl, she moved to Baltimore a wek later and I found out the bj was her way of avenging her BF's infidelity.  Lucky moi....

On a biz trip to NYV about ten years ago I met a Chinese gal who always wanted to do a HK in a movie. She was hot and who was I to say no?  She finished the job with tongue and throat in a cab after the movie....

Hints for safety?  None.

The best ever fun & excited!  I have been serviced at the movies & recommend it!

Blow jobs are fun, but full on sex is better ... Make sure no one is sitting behind you.

Movie theaters where the arm rests fold up.  Weekdays, early afternoon movies.  The more action the better.  She wears a skirt.  You wear loose jeans.  Finger her through the previews but make her sit still.  Case the joint.  See if they do walk-arounds.  Once the action starts she can straddle you.  I always used to make her cum first.  (I remember one gal who drew blood because she bit my finger so hard when she came...SWEET!)

She needs to watch the back door when she climbs on top.  But don't worry.  It will all be over pretty fast.  It's a lot of fun.

I've had several fun encounters in movie theaters, usually just some manual exploration, but I had one gf who loved to give BJs at the movies. With another gf who was multi-orgasmic, I would get her off several times during a movie. I loved watching her try to stay still and quiet every time she came.

The most fun theater-like experience was at a piano bar full of drunk Texans. My gf and I were sitting at the exposed rail on the balcony just a few feet above the crowd below. She told me she wasn't wearing panties, which I interpreted to be an invitation to confirm that for myself. I did, under her skirt, visible to anyone below who happened to look up. I have no idea who might have seen. Good fun.

To answer your question, and like someone else already said, weekday (Monday-Thursday especially) early afternoons are best. Look for movies that are not likely to draw big crowds. Big high-backed seats will give you the most privacy. Using a blanket is probably too obvious, but a well-placed jacket can conceal a lot and not raise suspicions.

I know it`s not quite the same but I had one of my best memories made at the drive in when my GF and I were the last ones to leave......at 6 the next morning!
We spent the entire double feature and wee hours of the morning in the back of her 1965 Mustang with the front seats folded down finding every way possible to make each other feel great! It was cold and crisp outside but so warm under that blanket.
I was surprised we were never approached by management to leave. Maybe they didn`t care. That was an awesome night though. Just the two of us bringin` it, one way or another, all night!
There`s something nice about getting your spent cock played with until it`s showtime again!!
I was 17, she was 18....it was the best! Miss you Rita.

Thanks for the information.  I am not sure why the side seats would be better.  But the jacket idea is good, maybe a trench coat.

Hope to get some play soon.

So, anyone know a provider that will allow this fantasy?