You wanted an honest opinion. Here it is. Spend the money on coaching, equipment, Norm Duke's video, a Bowling This Month
subscription, a video camera
to record your bowling, and/or something else that will improve your game instead.
Please don't take it personally. The reason I say that is, if your current league average is 183, and you occasionally roll in the 190's at tournaments, you have little chance of cashing or getting any return on your $285 investment bowling scratch against regional pros. There are some here who average in the 240's. They eat 180-average bowlers for breakfast. They would be happy to take your money, and all you will get in return is a lesson in humility.
Instead, wait for a Pro-Am. You can meet the pros, bowl with them, and have a fun experience for a lot less money, and a real chance to win since they are usually handicap tournaments. In the meantime, keep working on your game, get into a sport shot league, and when you are consistently averaging over 200 on the tougher patterns, you will have a better chance of success bowling a regional. Then, I would say go for it. Still, nothing stopping you from going and watching the upcoming event.