You do realize, though, that at the U of Alabama, most of those rules are broken by most of the houses. And you probably know that the Panhellenic Council turns a blind eye to all but the very worst infractions. Most of the houses spend well over $10,000 on rush, many between $20,000-$40,000 per year. The no contact rule is definitely broken by 100% of the houses on campus. How many summer rush parties or teas did you attend when you went through rush? I remember attending various sorority & fraternity parties thoughout the summer before I pledged and a few mother-daughter teas as well.
I think a good question to ask here is not what the rules are at the various schools, but whether or not they are enforced!