Garden tours? Nope. I have been asked, but would not do it. No thanks.
I do on the other hand personally invite members and their spouses of my Master Gardener and Master Naturalist groups to come by and see what's in bloom or one of my oddities. I grow scores of things they don't and in many cases things they are not familiar with or never seen. On a couple of occasions, I have also allowed people I don't really know to come visit. This has come about from newspaper articles about me or proprietors/associates at local nurseries. In the past year I have had perhaps 20 people stop by.