Smriti Irani once spoke how she totally refused to attend private parties and birthdays or weddings for a fee or to dress up as Tulsi for people's personal functions no matter what amount she was offered.
Most actors consider it below dignity and an affront to self respect. SRK, Akki, Shilpa and some others are only ones who are ready to go anywhere as long as you pay them the price they demand. They are bashed a lot for bringing down prestige of artistes and reducing them to mujrewala or commodifying artistes.
Earlier Lata, Rafi etc would also totally refuse to perform at private functions of others. I am surprised how she recorded Gayatri mantra for Isha Amhani's wedding. Otherwise Lata mostly avoided doing favours for personal parties or weddings of others or their jagratas. But then even Aamir broke his rule and danced at Ambani wedding, so I guess Ambani is the only one who can buy anyone and get anyone to do anything for him.
It amuses me how SRK's rivalry with other Khans, Bachchans (at one point), Hrithik etc is talked of but his rivalry with Ajay barely got mention except in few print issues of Stardust and Filmfare. Even their fanboys do not fight online much as much as they do for other Khans or Akki or HR or Bachchans.
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