Although the much-awaited wedding extravaganza of the Ambani is over, the buzz is still high.

There was entry based on a QR code messaged on personal mobile phones, colour-coded paper wristbands for access to different zones, and a medical response preparedness reserved for heads of state helped Asia's richest man Mukesh Ambani wed his youngest son, Anant, to pharmaceutical heiress Radhika Merchant in the year's most extravagant wedding.

Global celebrities, business tycoons, cricketers, filmstars and politicians of all hues attended the wedding at Ambani-family-owned Jio World Centre at Mumbai's BKC on Friday and a 'blessing ceremony' for friends and family members titled 'Shubh Ashirwad' on the following day.

A wide range of guests, from employees to business associates, were invited for another reception, titled 'Mangal Utsav', on Sunday at the same venue. Prime Minister Narendra Modi visited the venue on Saturday to bless the couple.

Three different invitations were sent out for the wedding and the receptions, with top-run guests being sent a large red box that contained an intricate chest incorporating a mini silver temple featuring gold idols of various Hindu deities, including Lord Ganesh, Radha-Krishna, and Goddess Durga.

The invitation revealed different cards for each wedding function, with one crafted from silver and resembling the main gate of an ancient temple. It included several keepsakes, such as an embroidered cloth with the initials 'AR' for Anant and Radhika, a blue shawl, and a silver box filled with more gifts. The simplest invitation was in a laptop-sized box with silver statues of three gods and invitation cards.

The guests were asked to confirm their presence through an email or Google Form.

Those confirming their presence received a message that "We have received your RSVP, and we look forward to welcoming you... The QR codes will be shared 6 hours prior to the event."

The QR codes messaged to the mobile phones and emailed were scanned to allow entry into the venue, where different coloured paper wristbands were tied to the wrists of all the guests, giving them access to different zones depending on the colour.