Plan your repair wisely. By that I mean, you need to search authorized Dometic repair centers and make the trip to several, to get a feel which place feels right to you. If all goes smoothe, you can expect a week minimum to have it repaired. The process includes your repair facility determining that in fact it is an amonia leak, then they need to contact Dometic to get warranty authorization. Then the part has to be ordered and shipped. So, keep the door shut until you get to the repair location. Once they get the telltale smell your good to go under warranty. Been there done that. Took me till I visited the third location until I felt confortable. Oh, and by the way, if you are taking it to where you didn't purchase the unit, be prepared to wait longer if they have in-house purchase customers ahead of you.
Bring a copy of the bill of sale with you if you go outside your purchased dealer.