Overheard while approaching the control zone in Wellington, New Zealand.......

ZKxxx: Request entry into the zone with Charlie 1021, currently 20 miles to the south west at 2500.

Wellington Tower: Cleared to enter the zone via the Sinclair Sector 1500 feet or below.

ZKxxx: Cleared to enter the zone via Sinclair at 1500 or below.

(A few minutes later...)

Tower: ZKxxx, suggest you descend to 1500 immediate to avoid a fast approaching pile of paperwork.