Birthday or an investment?

I don't know how many of my friends out there are seeing this but honestly, since I have written this then I wouldn't quite care how many people I am going to offend.

Have been receiving invitations from friends - now I'm not even sure of this vocab's real definition. People that you haven't been quite in touch with are now all happy enough to see me at their birthday party. I am indeed skeptical about my presence if it would really make a difference to the party itself or was it all about the birthday gift that I was going to bring along?

One more person, probably means more present. What an investment!