Just because of egg, you can't keep maharan saroop?
Alcohol is a big nono but egg and meat is allowed but not in the darbaar of course. You definitely got this information from some taksali singhs, they are the biggest fanatics.
Your entire family doesnt need to be rehitvaan, as long as you are kattar in doing maharaj sewa and you refrain from doing kurehits, all are fine. Taksal is a great place but many Taksali Singhs get too fanatical.