Amanda, the last bootcamp.I went to, 2 or 3 years ago, started on the Wonderwool Saturday and I managed to cram both in with the help of my beloved at home. We drove from Carmarthenshire to Buiilth, joining the ernormous jam that is Builth on any show day at 10 am, and I packed in the show in about 2 hours before going on to Tresaith. It meant I could take 2 spinning wheels to bootcamo which is usually imposible as I have more usually relied on public transport or lifts from other participants. My beloved took the car home and collected me the next Saturday.
Are you a spinner? Or a knitter? Don't underestimate the power of these physical things to de-stress you. There will be time to do these things during the week, you will feel competent at something, this will make you feel better about yourself, and more likely to believe you can do well in this amazing challenge that is bootcamp.
ps. Do I see that you are going to Northern Bootcamp? It may be even more impractical to do both on the same day then, but a small, upright spinning wheel, is still pratical and my advice still holds. And Aran is right. They will look after you.