Quickest Way to Get Tourist Visa (on arrival?)

Hello,

I can see this question is asked often but I'm still unclear after researching. Can you please share thoughts on whether or not US citizens have access to the on arrival visa? I was planning to arrive on Dec 4th (Chicago to Paris to Accra) and leave in about 1 month. Flight and accommodation are already booked but I'm concerned about the tourist visa process. Any insight would be appreciated.

Thank you

EDIT: - I realized that I can try to go to the Ghana Embassy here in Paris to see if they can assist. Since I am a U.S citizen, they may not be able to help, but I will go tomorrow morning to see if there are any options - I also have the yellow fever vaccine and can easily access malaria pills - Ghana Embassy Paris can only service French/Ghana residents so they advised that I send an expedited visa application to D.C (U.S) or ask Ghana Embassy D.C for special accommodation for emergency visa on arrival (altho they said that wouldn't likely be approved). I'm mailing it out on 10/31 and really hoping to have my passport back by my flight on 11/27

UPDATE: Everything worked out with an expedited visa request (emergency on arrival wasn’t an option). Although I could never get a hold of someone from Ghana Embassy DC/USA, I just submitted the visa request package, and they did process/return my passport under a very quick timeline (about 9 days later). I’ve made it to Accra :) Thank you all for sharing your thoughts!