I recently had my ingame wedding and really enjoyed it. Being able to see your character interact with the world and with other characters in a way other than killing and trading gear was really refreshing. The wedding event really breathes life into the world and gives a fun and entertaining event for friends/linkshell mates/etc.
I think it'd be cool if they did more events like this that could be free with purchasable upgrades from the cash shop just like the wedding. Maybe a house party event that plays cutscenes that can put attendees in embarrassing and hilarious situations. Or maybe a honeymoon follow-up to the wedding.
I just really like the idea of these events putting your characters through unique cutscenes and giving the environment to have fun with the community. Since the cash shop generates revenue for more ideas of things to be placed in there, why can't we have more wedding like content?! Anyone agree? Any other ideas?