I have an acquaintance I accepted a friends invite from about 3 years ago. We talked from time to time then, but like many other friends we seldom make contact now. I receive TP invites from her for one of two reasons. She is either stalking a lucky board and my letter has come up, or she is attending a wedding and doesn't (never) wants to go alone. The last time I attended one with her, I was surprised when giant bubbles started rezzing at the reception and people hopped inside.