We have done this. The risks of "shady operators and hidden fees" will not have any impact on you, because you are IMPERVIOUS to their pitch.
Yes, you might have to listen to the whole pitch, and have to stay the minimum time they required. But after you've heard the pitch, and they start asking you questions, just keep repeating that you are not going to buy today. You don't have to say "I can't afford it" or "I don't like this place enough" or whatever excuse, because then they go by their pitch book to counter your objection.
On our last one, we were in & out in less than 45 minutes. We informed the salesperson that we really appreciated the great deal we'd gotten, but we were not going to buy, period. She was very polite and just asked that we walk through the visitor's center with her. After that was done...we were done. You will find this to be the case for the more reputable, upscale companies such as Hyatt & Marriott. More aggressive companies will try to make you explain to a "manager" - the closer - why you aren't buying.
We haven't done it frequently because my husband finds it painful, but it can be lucrative.