Just to clarify, my understanding is you don't roll to visit your attractions whenever you open a new attraction. Instead, you only roll once a turn during your first main phase unless a card specifically tells you to roll to visit your attractions. This means, that (usually) you can't attempt to visit an attraction you've opened until your following turn. Is that correct? If it is, did you ever test visiting an attraction for free when you initially open an attraction? Maybe I'm playing it wrong but it feels kind of disappointing to open an attraction, wait a turn to attempt to visit it, miss the visit based on your roll and have to wait another turn just to potentially visit it for the first time.

There was a version we tried where you visited an Attraction the turn you opened it. It was just too good.

My playgroup is complaining about the fact that I can steal a card from you that reads “open an Attraction,” but without having an Attraction deck of your own you’re at a loss. I feel it’s similar to the way that if I steal your wish spell I don’t get to draw from your sideboard. Is this A) a correct interpretation of the rules, and B) intentional design?

If you’re playing a casual game, I would just use the Attraction deck of the person you stole it from. In a more competitive setting, yeah, it doesn’t work, but you’re right that many cards have corner cases where they don’t do anything.