What is so wrong with somebody inviting you to tour the place?  Get over it.  Don't know the number, don't answer.  Don't want to go?  Don't go.  But if you choose one that is within driving distance, it is worth it.  They are nice and gracious.  If you don't want to buy, don't buy.  But you'll be tempted.  Those places are pretty cool and you will think of them the next time you stay in a Holiday Inn.