On my monitor they don't look overexposed at all.
The blur in some of the ceremony pics are interesting though. What lens did you use? Or did you do some of them in PP?
I like photos from the first wedding better. I can see what you were trying to do with the aisle flowers, but I agree with mrs. green that maybe pulling out a little bit will achieve the look you were looking for.
From the second wedding, my favorite shot is the detail of the cake and the flower together. (Oh I love the cake shot of the first wedding too.) The dance shot is awesome, too bad the groom was half cut. But as a guest it's hard to get to
the optimal position, without obscuring the paid photog's view. You don't want the bride to see the back of your head in every important shot haha!
At any rate, I think both brides would LOVE your pics!