According to the various sites, there is no dedicated seating area, but there are a few picnic tables outside to eat at if you don't want to take it back to your room.
If you had heard you could sit in there it may have been back before Trail's End opened back up as a restaurant. Used to be able to sit in there with your P&J's order. Now I think it's probably restaurant patrons only. Like @ShirikiUtundu said, there are a bunch of picnic tables out front (most are covered) where you can eat your carry out.
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