Q. If I am a guest at a Sefardi home on Passover, do I need to eat on disposable plates because they might have served rice or something else not permitted to an Ashkenazi?

A. On question 4179 we were asked: “I am staying with two sets of friends this Pesach. One is very machmir (stringent) and follows Chabad minhagim (traditions). Is it okay if I do my own thing (I eat a special diet) and eat on disposable plates so I can enjoy my usual Passover cuisine?”

To what we answered: “Horav Shlomo Miller’s Shlit’a opinion is that you have to consult with your hosts with plenty of time before, and tell them in detail what are the products that you will be bringing to their table, even if you don’t share them and stay separate. If they agree, there is no problem consuming separately your own accepted meal.”

Indeed, in your case you should also use disposable  plates.

Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller Horav, Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a