i would volunteer for a minimal charge and the portfolio booster, but the last wedding i did burned me out on weddings

I used to have a studio (I did commercial/advertising and the ex did portrait/wedding). I learned fast that not only did I HATE weddings, but you really didn't make money at it, it was more advertising to get the new couple to bring the future kids in for portraits later. Best weddings I've had have been since I quit doing it for money. I shot a buddy's sister's wedding (he was footing the bill) for just the cost of the film/proofs. I was treated like a guest and ate well that day (and they threw in a couple of hundred bucks). Much nicer now with digital, I attended a friend's and mainly shot candids while the hired photographer did the set pieces (he was a kid I taught in sunday school, and his grandfather was a friend and mentor who had a photography business from the 40's to 90's). I just burned a CD afterwards and had a fun time. So much nicer without the pressure and expectations.
Robert