Respuesta: Sunday Recommendation
Hi koolwip, welcome to BA!
If you want BBBJTC, you can say in spanish "Oral sin hasta el final", "Bucal sin hasta el final" or in argentine spanish slang "pete sin globito hasta el fin".
I recomended you, take a look this post (in spanish):
http://www.foro-escorts.com.ar/foros/f12/catalogo-de-pts-de-luxe-hasta-final-203166/?highlight=bucal+hasta+el+final
There you can see a "catalog" of girls that offer this service.
You must call to girl that specify in her website, works full time to ensure that work on a Sunday.
On other hand, you can always ask to the hotel's guys for your likes.
Enjoy!
N.B: Please read this before doing anything
http://www.foro-escorts.com.ar/foros/f40/tips-escort-hunting-argentina-106639/