During a vacation in Cancun, there were people at the airport in official looking booths selling tours at a discount. When we got to the hotel for the welcome meeting, they warned guests those are scams and if anyone brought a tour to see them. Luckily I talked my companions out of listening because we were late for the bus to the hotel.
We went to a resort in the Caribbean and when we landed at the island airport there was a big sign that had all of the different major resort chain names on it. "Resort A, Resort B, Resort C, Resort D - Visitor Orientation Here!" right by the baggage claim. So if you were a guest at these resorts, you would naturally assume that you were supposed to stop there and do your orientation. And if you didn't assume that, there were "travel agents" posted at the entrance to tell you to come into the session.
Fortunately, we'd been warned ahead of time by friends who had traveled to the resort before, and said "No thanks." The "travel agents" were insistent that we had to come in and we got pretty firm with them in order to get through to the area where the resort buses were loading up.
We were told that once you went into this session, the travel agents started giving a time-share presentation for a resort that was in no way attached to the resorts advertised on the sign. So you were staying at one resort and a completely different resort was trying to suck you into buying future vacations with them. If you tried to leave the presentation, two travel agents posted at the entrance would steer you back into the meeting room. It was very high pressure and unless you were willing to get downright hateful with the travel agents and making a scene, you were stuck.
To add insult to injury, when the tourists emerged from this hour-long sales pitch, the buses that were supposed to take them to their respective resorts had already left. And wouldn't you know it, the time share salesmen had a bus available but it was $35 to $50 a head, depending on where you resort was.
So it was a sort of double-scam. If they couldn't get you for the time-share, they'd get you for the bus fare.
We got to our resort unscathed, but that night at dinner, we heard several complaining about the strong arm tactics used. Our waiter explained that the resorts had tried to stop this time-share company from doing this, but the time-share company kept finding legal loopholes to get away with it.