I've been to quite a few. The only bachelor's party I've ever been to with strippers was the one for my own wedding. I'm innocent. I did not arrange it. I think it's the result of having gay friends bending over backwards to give me the "straight experience", which I guess was sweet of them. But in these parts, it's not in any way standard. I mean... I was getting married to a woman I was attracted to. A bachelors party is probably the one type of party in a man's life where strippers are truly redundant.
All of the bachelor's parties have had some sort of gun shooting. Range shotgun shooting, machine guns bazooka and so on. Very childish but fun fun fun. Another reoccurring theme is exotic vehicles. So far there's been a tank, an amphibian assault vehicle, couple of helicopters, a Cessna... I think that's the complete list. A few of them have featured some sort of extreme sports. Climbing, adventure course and so on. At some point there's a dinner. They've all ended in everybody getting impossibly drunk, and most likely playing competitive video games at the after after after party until far into the next day.
I was too overcome by emotion about my marriage to be able to talk about it. I put all focus on the drinking rather than talking, and my friends respected that. I wouldn't be surprised if that would be standard for all men getting married.
If you want to keep it realistic, I think you should keep in mind that a bachelors party is seen as the last chance for a man to be a boy. That's what they represent. So we go out of our way to be as childish as we can, just for a day, indulging our most adolescent urges, which like it or not, tends to focus more on high performance machinery and competitions rather than strippers. That's our base nature.