It's going to sound funny when I say this, but the sore throat must have something to do with how you speak. I really don't do anything in particular to prep and I've only had a sore throat once or twice, and I know, one of those was because I caught some disease or other. Possibly you were tense and the tension went into your throat. Make a conscious effort to speak more slowly and possibly a little more quietly. You'll have to experiment. If you can, volunteer for cub scouts. If you can yell over the top of 60 screaming 8-10 y.o. boys, presenting is easy.

As to the adrenalin, I like it. I prefer it. I'm pretty nervous before every presentation. Usually, I'll shadow-box a bit before hand. It pumps me up a bit, but more importantly, it forces me to breathe correctly, so I'm less likely to (notice I didn't say I wouldn't) gasp my way through the presentation because of my excitement.

As to the bladder, it's a race-horse thing. I always have to go about 90 seconds before the presentation starts. First time I presented at the PASS Summit, it was bit of a gamble, because they didn't know me, so a board member was in the room. When I ran out, right before the start, he thought I was going to puke from nervousness, but I just had to prep for the race, if you get my drift.