If you wish to genuflect, no one will think less of you. However, since it is not our tradition to genuflect nor to kneel on Sundays as it is a little Pascha, you may get lots of invitations to coffee hour after liturgy since it will be apparent you are not Orthodox.
I’m not sure how we get a bad rap for being unfriendly, we go out of our way (in my experience) to make visitors feel welcome. So, genuflect, reverence the icons, or both! In any case you are welcome to visit and experience the liturgy of St. John or St. Basil. Please stay for coffee afterwards so the parish you visit gets a chance to chat with you.
Fr. Dcn. John