It's a wedding! He loves weddings. It's a party! He loves parties. Plus, this one has exotic Herculaneum Hebrews--not at all like those run-of-the-mill people in Rome. And he might have spotted that there's at least one dark-skinned person in the crowd, which is almost as decorative as a redhead. And... maybe everyone will love him if he gives them bags of gold.

Please feel free to mix and match any of the above explanations :)