Before you sign up to one you need to look around and stay a couple of days at them first. You don't want to be locked into a place you don't like.
That's what I did. Found a CG in an area I thought I would like and just pulled in for one night. If it looked interesting I'd stay another night. THEN I would decide if I wanted to book a month or more at the monthly rate.
Almost ALL CG's big and small have monthly rates.
Just be aware that SOME have electricity as an ADDED fee to the monthly rate. ESPECIALLY after you cross the Georgia/Florida state line if you are headed to Florida for the winter. :W