After getting engaged to Aishwarya Rai in Mumbai Sunday evening, Abhishek Bachchan is back to work.

Accompanied by his mother, actress Jaya Bachchan, Abhishek arrived in Jaipur Monday to shoot for "Drona" directed by Goldy Behel.

Clad in a white shirt and blue trousers and sporting sunglasses, a cheerful looking Abhishek landed at Sanganer airport around 9.30 a.m. He refused to answer reporters' queries about his wedding date.

Both the stars immediately left for Kuchaman City, the location for the shooting of "Drona". His co-star Priyanka Chopra had arrived a day before.

But now it is being speculated that the couple may hold their post-wedding party in Jaipur or Udaipur sometime in February with over 6,000 guests in attendance.

"Representatives of the Bachchan family have already started holding talks in this direction with the concerned erstwhile royal families," informed sources told.

The Bachchans are considered to be close to the erstwhile royal family of Jaipur and chances are that the bash would be held here and be attended by over 6,000 guests, including Bollywood stars, industrialists and politicians.

Sources in the Jaipur City Palace said the Bachchans have expressed a desire to book the entire palace for a day. Their major concern, however, is the security of the high-profile guests coming to attend the party.

The Bachchans' representatives are also reportedly in talks with some five-star hotels on the Jaipur-Delhi highway for the accommodation of some guests.

Speculation about the Jaipur do were fuelled after the former queen of Jaipur Padmini Devi met Jaya Bachchan in Kuchaman where she, along with Abhishek, is shooting for Goldie Behl's film "Drona".

The Jaipur City Palace is an imposing blend of traditional Rajasthan and Mughal architecture. The vast complex was originally built by Maharaja Jai Singh II of the Kachhwaha clan of Rajputs in the early 18th century.

The complex is divided into a series of courtyards, sprawling gardens and buildings. It is home to several palatial structures like the Chandra Mahal, Mubarak Mahal, Badal Mahal, Govind Dev ji Temple and the City Palace Museum.

Rumours are also rife that Udaipur, known as the city of lakes, could be chosen to host the post-wedding celebrations.

According to sources, the Udaipur City Palace complex could be the party venue. Part of the palace has been converted into two hotels and another part still serves as the residence of Udaipur's erstwhile king.

But it offers plenty of spots to hold a grand wedding and can accommodate 100-3,000 guests at a time.

The most popular of them is the landscaped promenade on the shores of Lake Pichola It offers spectacular views of the lake, island palaces and mountains. The Promenade Jetty is another venue for special dinners and ceremonial occasions that can accommodate up to 2,000 guests.

The island palace of Jagmandir is one of the most exquisite venues for weddings. Jagmandir's garden courtyard can accommodate up to 500 guests.

Udaipur has played host to many big weddings, including actress Raveena Tandon's marriage to businessman Anil Thadani in 2004. Actor Vikram Chatwal, son of US-based hotelier Sant Chatwal, also held his pre-wedding parties here in 2006.