Originally Posted by
bostontraveler
"pulse x" sounds a little mechanical, like what you'd hear when calling an airline or credit card...
Just keep it simple and say "Quiero pagar en Euros por favor" (I want to pay in Euro please)
If they then issue a receipt in USD you already said "quiero pagar en Euros"
While simpler, a problem with that phrasing is that there could be cases where the waitstaff are unfamiliar with DCC - it does happen - and the cashier would be thinking, "Well, of course it will be euros. What else would it be?" while repeatedly pressing the green button through the prompts, including DCC.