We joined Good Sam's Club, but not for the campgrounds......we seldom camp in commercial RV parks. At $12 per year, we wanted to see what they offered. By far the best product they have is an online route intenerary. It will list mileages, times, state border crossings, avg gas prices, dump stations, mountain advisories, etc. You can plug in whether you want/don't want interstate travel, cities, shortest routes, etc. We feel that we got our $12 worth the 1st time we used that function. Their Hi-Ways monthly magizine is pretty good. Plus, if we do ever stay at 1 of their campgrounds, we have a coupon for the 1st nite free (worth up to $20........like they have any campgrounds that cheap....that part of the advertising was false.
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The down side of the membership is that you get a piece of junk mail from them about once a week with all sorts of insurances and stuff........but it can be used for kindling.
Chap