Consider your costs and budget very carefully, not just camp fees and flights. You may need to cover things like: 1. International travel costs 2. UK travel costs (station / airport to Kent County Showground and back) 3. Visas 4. Travel costs to visa interviews 5. Passports for your group members 6. Medical and/or travel insurance 7. Extra spending money for food and drinks during the journey, souvenirs or other extras.
You have access to IFM-SEI fundraising guide in different languages, 2015 edition available here.
A BRAND NEW 2019 version of fundraising guide is due out in early 2020. Look out for more information from your head office.
Why not share your best fundraising ideas with the UK / international delegations you are camping with? Working on a shared target like this will give you all a common purpose for the whole year! Email firstname.lastname@example.org if you have not yet been matched with another group.