Gidget
The one exception from your list is toon marriage. Not only would you have a lot of folks marrying their alts, there would also be a lot of folks pushing for polygamy, both for legitimate RP reasons and for the usual exploitative ones. In short, I think it would cause more issues than it solves, so I feel it best to leave marriage as strictly RP.
haha could be yeah xD but was worth mentioning imho
---