I was there as well for opening day. My first time at BB. Decent park, it was clean and everyone was friendly. Food there is much cheaper than most parks.
I was impressed with Rumbler. It just goes to show you do not have to be the biggest or fastest to be a great ride. This is a very re-ridable coaster. I got around 30 rides on Saturday! No waiting all day. It really seems longer than 2827 feet.
I thought it was funny, on the hand written sign as you go into the park they had all the stats and they had put it the coaster had 12 minutes of airtime. It had airtime but not quite THAT much. Very fun, everyone needs to go!