I don't think it's an education issue except that, when confronted, most people are going to say "gee, I didn't know that," even when standing right next to one of those beach signs listing the rules.
I had been thinking this was simply an enforcement issue, meaning that all you need is for someone to issue tickets to offenders and you'd be surprised at how quickly people would learn the ordinances. However, I just read through several beach-related ordinances and none of them mention any kind of fine. For example, for the dogs on the beach rule the ordinance specifies a $30 fee to obtain a dog tag, but there's no mention of a fine or any punishment for people that don't follow the rule. Maybe that's typical for ordinances -- never really looked into this previously. Does that mean there's no real ability to enforce such ordinances? Could the beach patrol really do anything to someone who refuses to follow a rule?
Source:
CODE ENFORCEMENT LINKS TO POPULAR CODES, ORDINANCES, & STATUTES