Not the original ones. I think later ones may have.

The marketing was cops chasing two brothers who were robbing gas stations. Nothing about the major twist that would happen half way through the film.

I think, being Clooney was busy being a dishy doctor in ER at the time, they went in with no idea of what to come. To be fair it was opening night and nothing much had been written about it so you only had the trailer to go by. Easy to understand why they had gone in expecting what they did. So when the movie flipped it certainly wasn't their cup of tea.

I haven't personally but I have seen loads of older people (they must have been in their 60s at the time) who went to see Dusk til Dawn expecting a crime drama with George Clooney.