Alaska has tightened many of the lounge access rules, reducing most access to single-entry, and it appears not all of the staff know that the MVP 75K passes remain multi-entry. The staff in PDX told me make sure the next lounge (LAX) knew I wanted to reuse the same pass, which was good advice, as the agent there would have pulled another one. (Fortunately, when I said something, she went to talk to a supervisor.)