Hi David, and welcome to Just Answer.
Since this is a fundraiser, $50, including 2 drink tickets sounds reasonable; however, you'd have to take into account how much it will cost for the food. If ordering off the menu is included in the $50, it should still reasonable for the guests and for your fundraising purposes, depending on the prices of the entrees.
In order to get people to order off the menu and not from the buffet, you can easily print up you own menus, including only the food selections you'd like to offer. If the manager told you the guests may order anything from the entire
menu, simply print up a few notices for the tables (or to include in the menus provided by the restaurant) and perhaps to include with the invitations (or on advertising flyers, etc.), saying something like: 'any item from the menu may be ordered--buffet excluded'.
I wish you much good luck with your fundraiser and hope you are very successful!
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