I know the one time I was cleared into a restricted airspace (civilian jet on an IFR flight plan), the controller said "EJAXXX, cleared into restricted airspace RXXX" Can't remember where it was, somewhere just north of Mexico in AZ. We were told don't go anywhere near the antennas on the south side of the field, we said, okey-dokey.
The airspace had gone cold before we left again. Up here in Canada, they differentiate between and ATC instruction and clearance. The instruction you have to do, the clearance you have to comply with, AFTER it is accepted. Maybe some ATC types could chime in, how they handle their lingo.