Ask the ticket booth or entry booth where city hall or guest relations is. Tell them your situation and usually they issue a card with alternate access, but usually not a bypass if the entire line. There is also the fast pass feature that's free for anyone to use
You could also try single rider, might get you into the rides quicker.
Guest assistance card, how does that work
No, but if you have some form of documentation from a doctor, you might be able to get preferred parking and a guest assistance card.
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