I liked having a set fee including utilities, pest inspection,hood inspection, etc the church i worked out of brought the kitchen up to inspectable specs (most churches do not have inspected kitchens, older ones generally do not have everything needed to pass inspection).
There were very few active members by the time I came along.....they had monthly lunches. The biggest problem were all the other people renting space that had kitchen keys. The theatre group that would leave a coffee pot on all night, or the kitchen doors unlocked in an unsavory neighborhood...
One renter had 300 members (the kitchen key) and would use equipment.
but also film wrap, foil, ziplocs.....one day i walked in during one of their lunches and they had taken produce out of the fridge to make room for their shtuff.
Church kitchens are important to their congregation.....so buy fridges and lock them, they have their fridges and you have yours. If there is alot of traffic have a closet or space that is just yours and lockable......talk this over with the minister.
Be careful with open or vague agreements, all of a sudden it will become one sided.....or lopsided, for one of the parties.....at least there is potential of that occuring.
Scheduling the kitchen, if it's used by more than you then who schedules time.....what if you end up with a large party and the church picnic is that day?
Who accepts delivery?
Who repairs equipment or maintains it, especially if more than you is using it?
Timliness of repairs.....dang, Mrs. White broke the oven door and you have a party in two days.
Who oversees repairs?
I've got a couple of friends that rent the seminary kitchen with students and a hall available for them. So they serve a $5 lunch 4 days a week that helps move leftovers, they have a special low rate for on campus events booked by the seminary. They can schedule events in the site and NO ONE ELSE has access to the kitchen. Their business is growing....without the lunch perk they'd not be doing as well.