As a family with small children who also go to festivals towing a caravan, the options become more limited when Motorway driving. It isn't an easy option to leave the motorway to look for an alternative.
The supermarkets usually have a height exclusion barrier which in some cases we were unable to access with just a tall car and roof box. A caravan can't get into them at all, so no way to park.
Town high streets don't have suitable parking for a caravan to pull up.
What we did find is that unlike most food served at motorway service stations, which is pricey up to the level where Dick Turpin would approve of their highway robbery, the Golden Arches does a good deal. MacD... charge the same price in al their UK franchises, wherever they are, high street, out of town or motorway. It means we can get the little ones a Happy Meal for about £1.99 each and if we are not hungry, the same ourselves. Most of the motorway outlets do not allow an adult to buy a "Child's Meal" to eat themselves, you are only allowed to buy the incredibly expensive "Adult portion".
Macdonalds may not be exciting food, but at least they play fair.
Quack!
GtD.