I worked for a development company 2 years ago. I was fired on my last day of probation, after 6 months. I wasn't really expecting it. I felt a bit bitter about it; The boss also behaved improperly towards me on one occasion, but I liked working there and felt like I got along with the team. Then I was asked to leave when many other developers who were less skilled and experienced remained.
Some time ago, I received a message about them organizing an "alumni event" where I was invited. I initially said that it would be great to meet them, but then I felt apprehensive about going, and kept delaying my answer.
They are doing it at the offices, after-hours, and most of the team will probably be there, with one of the managers "spinning some tunes".
Is it OK to organize such an event and invite me? How should I behave if I go?