You know, my Tamagotchis have been doing this every day (although not at the same time. While Seren was at the beach, Heebi was just watching TV! He went later, though). I think it's a seasonal thing, kinda like a summer holiday. I could be wrong though. Maybe they will do different things for different seasons? For example, kicking around in the fallen leaves during the Autumn or having snowball fights in Winter?