It must be noted that with power comes great responsibility. The glass must be returned within a 24 hour period, lest said privileges be revoked.
Should a member of staff ever question the loyalty of an export beneficiary, his/her door keys must be offered to whomever asks, with an invitation to check said home for unreturned glasses. If a single pub glass is found, said folk be barred for a month.
Host: 'In twenty minutes'
You: 'May I have a pint now… and an export for later?'