Sora was going to be excited because he'd never visited a friends house before. Literally NEVER visited a friends house before. Abe was kind of like a friend, right? Plus, no matter the fact that he was generally pretty humble, some part of him was still wide-eyed when people treated him like the Prince he was. So he was just interested to see how it would go.
"Yes, let us know. If your Father would like to write to me that is fine." The Father was more likely to ask for what they really needed, but Sora had already planned to bring money with to help pay for their stay.
Roxas gave Hayner's shoulder a pat. "Hayner, Corin does not know the story of Sora and Riku's very first meeting. You tell it better than I so please go ahead."