Well, as poor as we were when we got married, it was a piece of cake to make it cheap.
We rented a grange hall, my husband made a carrot cake in a sheet pan (you can rent these) it was one layer!

We had a pot luck and told people not to give us gifts. We had about 40 guests.

I later regretted that we didn't ask for gifts, (we asked for recipes) because it took us years before we could afford plates, silverware, and towels that matched.

Everyone brought really great food and their favorite drinks (BYOB)
I know that you are probably not going to be at this level, but the point is,
you don't have to spend 10 grand on a wedding to have a good time!
My girlfriend's mother made my wedding dress too.
It was great.