If you are fully initiated but you do not have love and affection for Krsna, then even if you offer something by mantra and 16 kinds of paraphernalia, Krsna will not accept your offering.
On the other hand, if you have prema ( Loving affection ), Krsna will have so much hunger for taking whatever you offer.
Krsna thinks, "When My devotee offers anything to Me, I will take it. I will accept it, because he has prema. If that pure devotee is bringing something to Krsna and he has not yet offered it, Krsna will run after him to take it.
- B.V Narayan Maharaj -