Congrats Robin, I hope it works out for you. Wedding bands can be fun. I've never been in a wedding band, but have played a few weddings, they can be a blast. Last one I did was the night I tried out my Washburn BT 2 onstage for the first time, guys in the band didn't even know I'd bought it...surprised everybody, but it sounded great.
When Clapton recorded Wonderful Tonight, he was in the middle of a nasty divorce. He said in an interview it was really difficult singing it, when he really wanted to growl and yell at her. Not easy to sing a love song when you just want to get the hell away from that person and getting away is getting ugly...I think the song itself is basically just another love song, not impressive, but I love the guitar. Simple, melodic and a great sound, probably his old black strat. What sucks to me is every guitar player I've ever heard try to cover it tries to use a distortion pedal...HUH??? it's a clean Strat, probably the neck pickup. That's how I do it and I peg that sound every time.