To my knowledge there is no choice of location for a vow renewal. You can have it on the deck though. The lounge is for inclement weather unless you ask for it specifically.
I am also getting married on the Wonder, Feb. 29th. We originally asked for the secret deck. You can ask for this, I will tell you though that they will move you to the Cadillac Lounge if you have more then 20 people. We have 27 booked, with a possible 5 more yet to book. Out of the 27, 4 are under 4 yrs old.
I am a bit sad that we can not have it on the secret deck. BUT I do understand that it is a safty/coast guard issue. My olny issue is that I also have mild asthma, and as an earlier poster stated, the stale smoke issue is foremost on my mind right now. I have e-mailed Cathy and are waiting for a response.