Translation of argón

Thanks a lot. Today and tomorrow are holidays in Switzerland, but I'll do it Tuesday first thing in the morning...please have a look at it and confirm. Where do you want me to place a reference?
I walked down the main street of the town and soon found out that there was a nice place not far from the main square. It cost around two hundred pesos which was equivalent to twenty US Dollars.
My wife joined me two hours later and everybody went to breakfast. The plan for the day was to visit a cave on one of the islands. We took smaller boats to get there as the ship was too large to approach the island.