Things to consider when donating food
If you are not filming in the US, first check the regulations regarding food donation in your country.
Well in advance of filming, identify and contact local food banks, food donation services, or community shelters in the area of your locations or stage, that will accept any left over catering, craft service and/or beverages.
Liaise with the donation receiving organization and your caterer/crafty regarding how the food is going to be collected or delivered.
Remember food for their lunches will be coming from your breakfasts, and food for their dinners will be coming from your lunches, so plan pick up or drop off with these times in mind.
Some (but not all) organizations can take your dinner service too, if it can be picked up or delivered by 8pm, but make sure you have confirmed this with the organization you are donating to. If they are unable to take evening meals, make sure you have a plan for that food - either to be taken home by crew or composted.
(Google food donation map for USA below. Special thanks to Smuggler for providing this resource.)
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