As I mentioned in the other thread my cousin mentioned the same thing to me about fried and fatty foods post gall bladder removal. He has trouble digesting them. It could be an adjustment for you. I remember my cousin used to make Thanksgiving Turkey in a deep fryer and had to give that up.
As far as general diet goes most doctors don't really get involved in that. But how you do after surgery with diet will tell you what adjustments you need to make. I would try and eat whole foods, avoid fatty, fried and sugary etc. as mentioned above. Perhaps a bigger adjustment for you than most, but doable.