I would guess their wedding is pretty simple/stereotypical its probably just at Rhodes itself and while i think both of them would like it to be not such a big occasion (even though it is), if the famed Doctor of Rhodes Island is getting married to an ex-Ursus General and head of Azazel Clinic, it would be made into a big thing whether they liked it or not (but for the most part they don't mind, at most are a little shy)

Honeymoon would probably just be somewhere peaceful and scenic that has good food, i don't think of them as needing anything much more