I think you might've misread my comment - I LIKE getting feedback!
In fact, I received some feedback from the person I was practicing with a couple of days before my 6th Kyu test with regards to my Katatetori Shihonage that gave me the "aha!" moment I needed to do the technique less badly
What I was trying to say is that feedback from my partner is valuable, but that I always defer to my sensei's advice, since it's their class and they have my respect.
With respect to your question about how often I practice directly with the sensei, at our dojo they generally work with most/all students, by moving between each of the pairs and observing them. If the students are having trouble, the sensei will provide additional instruction, and on occasion step in as one of the partners to explain the technique.