I think the point is, they haven’t signed a contract yet. So while they may have it, they aren’t bound by it in any legal sense. But it’s probably not a bad idea to follow the process spelled out in it.
We cancelled a direct purchase in the summer of 2019, called our guide, he asked we send him an email stating our desire to cancel, and a few days later we received the call from the admin office and was issued a refund. It was very simple.