I'm not a huge fan of Knott's. It's not the same quality as Disney parks. It's okay for a short visit on a not crowded day, but it just seems not as clean to me. I've been on grad nites and the crowds aren't that much different than on a regular summer day (just more teenagers than usual). If you have older kids or teenagers, it's probably good, but if you have little kids, there isn't that much there to do (except Camp Snoopy or whatever it's currently called). If you're going as adults only, it depends mostly on if you like thrill and carnival-like rides or not.