The high fives was the nightly parade and part of nightly ritual. The security guards were doing their jobs walking in between the carts. Do they give an occasional high five? Yes good customer service and making the guests feel at home is part of their job.
Out of curiosity, what activities did golf carts stop you from doing?
A it safe to assume you did not have a cart or a rental?
If you don't like golf carts, then you might want to head to north myrtle beach to someplace like MBTP. But be forewarned, the residents there do have golf carts. Not like the other places with rentals.