I think £700 is a lot really.
What are the main costs?
Thats roughly what I spend when going in total for 2 people.
Can cut most of this down too. More people = less money.
The 328 only has two seats now though

To be fair, accommodation can still be cut down, thouse houses work out pretty good value for money when there are 4 of you!
also if you collect tesco points you can treble what you have and get money off the train crossing, we paid £15 for our crossing last year and £35 this year
WHAT!! Never knew about this, thanks!