[X] Something else: Have a going-away party for Daio at a beach with the whole family, giving him a chance to have fun with his nieces before he has to go assume the duties of being the Lion Champion, taking the opportunity to be just family for a time (As much as an imperial family can be anyway). Some fun in the sun with Kaname and the girls should be a great chance to reconnect with his wife with some parents-children bonding time. Besides I'm sure Ryoko wants to spend some time with Daio too, before he leaves.
[X] Something else: Have a going-away party for Daio at a pool or an Onsen or whatever the Rokugani use with the whole family, giving him a chance to have fun with his nieces before he has to go assume the duties of being the Lion Champion, taking the opportunity to be just family for a time (As much as an imperial family can be anyway). Some fun in the sun with Kaname and the girls should be a great chance to reconnect with his wife with some parents-children bonding time. Besides I'm sure Ryoko wants to spend some time with Daio too, before he leaves.