What he said.
Get married in a suit, then change into a tux for the reception. That way your suit will be more afternoon appropriate (and you'll have more leeway in the fabrics), but you will still be evening appropriate in a tux...
I did this - well, I wore morning dress for the ceremony, not a suit, but then I changed for the evening festivities. It feels pretty swanky to change for the evening. You could get a more fun, summery colour of suit, that will be good for many future summer weddings you'll attend as a guest. Beige, light grey, light blue, etc. If the dress is quite formal, linen/cotton is probably out, but a summer weight wool is a good one I'm sure you'll wear lots.
Also, if you're going to do a tux (even if you're going to do it during the day), sorry if I'm repeating others' advice here, read www.BlackTieGuide.com.
and here is a 32R borrelli on ebay
I've asked about this a lot -- the consensus is, most of the forum's chelsea fans don't love 'em and haven't taken the time to think about how to wear 'em.
I like regular chelseas with jeans, and since the broguing only dresses them down, I think they'd be quite at home.
So out of place with a suit?
I don't want wingtips on the chelseas. Though I've seen some with a medallion that I don't mind.
Oh, the floating medallion kind. I misunderstood. That doesn't really make a material difference, but I don't like floating medallions.
Generally, the kind with a wingtip is in tan, which is the big reason I wouldn't like them with a business suit. I am fine with chelsea boots with suits, as long as the material of the chelsea is appropriate for the cloth of the suit -- standard rules apply on that front.