Pet friendly hotels are incredibly beneficial to guests as they allow guests to stay with their pets. Travel can be a traumatising event for humans and animals, and having to do so without a beloved companion makes both more stressed.

Yes. Although there may be some issues with people thinking it is "gross" or "wrong" there is nothing wrong with it. Breast milk is incredibly beneficial for babies, especially from birth to six months.

He is an incredibly boring fellow.

Incredibly, he survived the fall.

Savannah was incredibly beautiful.

The word incredibly is an adverb.