Reading through this, it reminds me that holidaying can seem expensive and for this very reason, I used to take hardly any 'proper' holidays abroad. Now I see holidays as something you invest in, something you pay for with all the hard work you do for the rest of the year, so it's totally worth it.
I'm doing budgeting for our camping trip (family of 4) to the Charente-Maritime area of France this Summer for 16 days. We take our own gear so campsite fees are a bit cheaper.
I've been calculating this inn an actual excel spreadsheet, with Euro / Pound conversions. Geek out.
Eurotunnel £160
15 nights at campsites approx £500
2 nights cheap stopover hotel there and back £110
Petrol £280
Motorway tolls £60
Ferry across the river mouth between campsites £27
Travel insurance £70 (est.?)
Food, meals out, shopping for little holiday stuff (buckets, spades, etc) etc £750 (£50 a day, seems quite conservative as eating out can be expensive)
TOTAL £1900
I think quite a few people seem to be underestimating how much petrol costs on driving trips, especially when you are loaded up. Going all the way down to the South of France is going to cost you £££s in tolls and petrol (which is fine, but I think I wasn't aware of how much in the past).