A fouled rifle will fail you during a reenactment, and is dangerous to those around you. They will be glad to help. Neatsfoot oil is recommended. Shoes may be soaking wet after an event, but will be fine if left to dry in shoe trees. Brass buttons, plates and insignia should be polished periodically, especially before events involving formal or ceremonial activities.
More progressive units dispense with brass ornaments altogether.
For this reason, any hat brass is discouraged. When drycleaning, be sure to emphasize that no crease should be put in the coat or trousers. It is better to have trousers cleaned but not pressed. This would damage the blacking. Thoroughly drain your canteen after each event, storing it with the stopper out.