Beeza said:
Astronuc, you are my hero.
I'm probably not a good example, since I tend to be contrarian and recalcitrant.
lisab said:
Are you hoping to make career contacts at the conference? If so, a little more formal attire is appropriate. Maybe not a full-blown suit, but slacks, shirt, and a tie. And clean dress shoes.
I would agree, if one is trying to impress potential employers or one wants to be taken seriously.
brewnog, JasonRox, cristo, ZapperZ, mbrmbrg, Moonbear, D H give good advice. I'm sure Evo would agree.
Cyrus overdoes it a bit, but he's generally correct.
Dress for success. Dress slacks, dress shirt, clean shoes, would be fine. A tie might be a good touch. If you have a jacket, and it's too warm, take it off and hang appropriately or drape it over the back of a chair.
Certainly at some point, as Cyrus indicated, it would be worthwhile to invest in a suit. It doesn't have to be a tux, but a nice 'fitted' jacket.
I'll wear a suit on occasion for those folks who would prefer I wear a suit. When I interviewed for a job, I wore a suit and tie. When we went out for lunch, I left the jacket behind, but still wore the tie.
A golf shirt might be a bit too casual, so a nice dress shirt would probably be better.