I want to buy a 30 day pass for an upcoming trip in Feb, hope that option will still be available...
As for partner lounges the form states:
The 30-day membership grants access to all Delta Sky Clubs and Alaska Board Rooms, as well as select Air France and KLM Lounges with the use of the temporary membership card. (At partner lounges, guest access is subject to the policies of each lounge partner. Delta Sky Club cannot guarantee guest entry at partner lounge locations.)
So, AS and AF/KL lounges are ok, the rest will be a hit or miss.