The dress doesn't grab attention, especially in a small picture, but up close the print is attractive (and forgiving of spilt wine etc!), it's got interesting colours and a pretty, floaty vibe. I think it's a good choice from the info you've given OP, and absolutely fine for the occasion.
I get that for some people 'fine' isn't good enough, but not everyone wants to make a statement with their appearance. If it's right for you and the occasion, something you can forget about as you mingle, chat and eat with old friends and colleagues - it's the right outfit.