we are off camping on friday for 10 days - devon for 5 and cornwall for 5. Campsites are coming in about £250. We have also filled carup with petrol and I have a good idea of what out petrol costs will be while away and for return trip ( so have set this aside with the campsite money)
However - why is there always a however?? 
Just got bill for work done on roof and it has come in quite a bit higher than expected. had to be done as we had leaking into attic over winter. Also builder is a local guy who we have used before so I know cost is genuine (he gave us an estimatd but as was doing it realised there was more extent to the damage than intiially seen).
So - that means I could do with having a nice holiday but keeping budget low. Have been to Aldi today and bought box of wine - crisps- snacks (all the unessential stuff). Have also got pasta/pesto/rice/noodles in the cupboard to take. have got coffee/tea/cereals too as well as loo rolls and toiletries for all.
So - how cheaply could we do this trip. We still want to enjoy it -but I don't want to come back and spend a few weeks worrying about buying food etc.
Do you think £50 per day will do it?? We will probably spend most days on the beach or coastal walks in Cornwall. We have done Devon and Cornwall quite a bit before so don't feel the need to visit lots of places this time.
We will take a cool box to the beach with cold drinks rather than buying from beach cafes and if we remember we will take a flask.
Any other suggestions? Do you think my budget is realistic? thanks