The celebrations have already begun at actor Sunny Deol's residence as his son Karan Deol is set to tie the knot with Bimal Roy's granddaughter Drisha Acharya.While Bobby Deol, Abhay Deol, and Sunny Deol reunited for Karan's wedding, veteran actor Dharmendra has decided to give a miss to his grandson's pre-wedding celebrations and to only attend his main wedding ceremony.