Have done this on two occasions as I had a colleague or friend in CW and I / we were in F but working on the same project.

If you are delightful with the CSD and the CSD is his or herself, also delightful, then youŽll be fine. It worked for me, both times.. of course, rather than lounging around afterwards in the spare F seats, we respectfully, and delightfully made sure that those not belonging went back to their respective beds. The CSDŽs generosity is NOT to be taken the p*** with!

Of course CSDs really do vary, but if you are polite, and suggest absolutely, that IF there are spare meal choices, AFTER all F guests have had their first choice etc... then you are in with a chance.

Once the CSD had OKd it, the F crew were more than accommodating... ^