Riku was going to assure his love that it was alright, and they'd think of someway to deal with the conflicting appointments, but the tone of the Prince's voice made Riku stop short and think. When was the last time Sora was invited somewhere? This probably meant more to him than Riku even realized.
"You were invited," Riku assured him, taking both Sora's hands in his own. "By young lords of your country. They sincerely hope you will be able to make it tonight, and hope to be formally introduced. There are a couple young men, who may not be there, who are hoping for an introduction and possibly an invite into your court. They are... excited to get to know you, Sora."