I know back when peanuts were served on Southwest flights they allowed some with peanut allergies to pre board so they could wipe down there seat and tray table if they wanted but now days I don't think they would let you since nuts are less on Southwest flights since they no longer serve them just a few customers might being them on. You could talk to the gate agent to see what they can do but now days the most I've seen done is an announcement to please not eat nuts on this flight because of a peanut allergy. -Blake
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