Aspire has unlimited PP lounge visit + up to 2 guests. I flew out of ORD a week ago and took my aunt there. They just swiped my PP card and no charge came up on my Amex card. I don't remember how long it took for my physical PP card to arrive, but it was more than 1-2 weeks I believe, after my online registration.
Ascend is the one with 10 visits only.