Mom also gets the "most energy" award. While the napping team goes back to the hotel to rest she keeps on going, and when the rest of us go back to the hotel early she goes sightseeing with the first team. As long as we pull her up any stairs we encounter (and there are a lot since we've been taking a lot of subways) she's fine.
We walked along the beach and saw tons of coffee shops but none of them were open. A few of them had hours posted and they said they opened at 9 or 10. Hmmmm. We walked back to our hotel and had bulgogi and cake for breakfast....and appreciated every bite.