DH and I made the mistake of buying retail at Wyndham about 12 years ago. They said they would take care of the other time share we own, so that we only would have the Wyndham TS.
After 12 years, we still own both timeshares.
Wyndham is nice, and we've finally gotten to the point that we don't regret our actions. (Took ten years, but....) We had a special Christmas stay at a four bedroom presidential at Wyndham Fairfield Glade (about halfway between Knoxville and Nashville). A lot of points for two days, but it was worth it to have the extended family in.
And next year, we'll be able to go to Bonnet Creek, for much fewer points than a Disney resort...even though BC is a lot closer than some resorts.
ETA Or is your cheap stay based on a timeshare presentation?
Now, will you be there more than two hours. Hard to say. They may let you go if you tell them you won't be buying for a couple of years. Kids in college and such. They are very high pressure. However, I think they'll back down if they know you're going for future reference.
I don't even know if you need the tour. Invest in a TUG membership as stacyeileen suggested. There's a forum there, specifically for Wyndham. Then, do a tour of WBC on your own. I think both the timeshare and hotel can use each other's facilities.
I think you'll like Wyndham. But I think you'll hate the sales weasels. Good luck.
