Well, I'm actually shooting "4" weddings by years' end, all in a variety of settings. The first 2 are in churches; one is a gym style with high white ceiling, the other with wood style dark ceiling

.
1st wedding is set for noon; 2nd is for mid-afternoon.
1st couple with 6 attendants wants traditional poses and candids, and the usual line-up of 1st kiss, ring on hand, etc. 2nd couple who has 9 attendants wants more informal style photos (they are a bit free-spirited

), but I plan to give them some traditional poses as well because they tend to change their minds so much.
My husband (who is a pastor) will be performing the weddings (good for me as he is flexible and understanding on getting good shots). I'll have freedom of movement moreso than other settings because of this, and flash won't be a problem.
Lighting will be a mix of candlelight and dimmed stage lights (flood type) for both settings.
The reception will be held in a brighter lighted area in both cases, and yes, there will be the dance.
I have a 3rd wedding end of June, but it's going to be VERY INFORMAL on the beach...bride is older and wants to wear capri's and shorts for the groom. I've done beach photography before, so I'm not so worried about that one!
I think I've answered all the ?'s...I've read many of your posts, so any advice would be greatly appreciated!
These young couples have no money to hire a "pro"--and I've already shot some engagement photos of one of the couples that turned out very well. This is my gift to them, plus it will give me some great experience as I hope to move into wedding photography in the next year or so. They get free photos; I get experience...a great trade-off for both of us!