Susanne - if you borrow the tent, it's up to you who you share it with ! - it's only a small (igloo style) eurohike. They'll probably be an airbed to go with it if you want. We'll have spare seats available in the car if you wish to travel at the same time as us.
We might also be able to dispense the odd cuppa etc.

Is this biking thing serious ? - we could bring a couple of folding bikes with us if so.