HAHAHAHAHAHA . honestly, if someone ever raised their voice, let alone took a swing, during a park concepts meeting, i'd end the meeting and ban them for life.
you're going to want to be tactful, polite, and truthfully... you'll need an explaination as to where you were all winter and why you couldn't just roll up to the park staff in season. i've never met a park staff that ignores customers while they;re diggin on features.
also, remember, you're 14.... and you're criticizing someones lively hood.... like i said... if you were meeting me and anything less than stoked, with some new ideas, i'd give ya the boot.
approach it like you've got some ideas you'd like to share, and that you are light years more mature than everyone else your age.
good luck dude.