I will try ..
There's approximately 2000 trucks parked, at Manston Airfield, no Amenities, Couple Hundred on M20, no amenities,
https://www.kentonline.co.uk/gravesend/news/hundreds-of-curries-delivered-roadside-to-stranded-truckers-239717/ Most European drivers carry enough food for a couple of weeks,and restock as and when, Some have microwaves, or it's just a gas burner, you are technically self sufficient, all you need is fresh water and Toilet/washing facilities, Longest I've been stranded was 3 days in snow, If there's no Toilet you go were you can, no2 under Trailer, No1 wherever..
Kent Councils, and Government have had years to plan for these incidents which happen in Kent on a regular basis, Manston was trailed 2 years ago, due to the amount of times the French kept misbehaving and stopping channel crossing, Kent planning opposed the Manston Airfield, and the new Park currently being built is allegedly on a flood plane,and they tried to oppose that, Government overuled them..