See and hear the glee of this British woman living in Switzerland at renouncing American citizenship.
LaTasha Coates was lucky. She quickly got an appointment in Switzerland and soon after received her CLN.
That is very different than Canada where it may be a year to get an appointment (if a Consulate will even respond to a request for an appointment) followed by another long delay in receiving the CLN.
Or, you can do what Stephen did and travel to Iceland or another country to renounce. That increases the cost but it makes a very nice vacation.