Athletes, celebrities, influencers and business leaders converged to revel in extravagance that was as much a testament to the couple’s love as to their extraordinary wealth.

The wedding celebration of Jeff Bezos and Lauren Sánchez culminated on Friday night when Ms. Sánchez confirmed that couple had tied the knot with an Instagram post, showing herself, looking ecstatic, in a lacy white wedding gown alongside a tuxedoed Mr. Bezos. She posted under the name Lauren Sánchez Bezos.