I love Halloween and refused to let it pass by un-celebrated every year that I was in BsAs. So..... I threw a party! As stated above, there aren't a lot of options for buying decorations (you can get spider webs at cotillon stores!) so I made all of mine myself, as well as Halloween-themed snacks and dessert. My Argentine hubby said that he doubted anyone would participate in the "no costume, no entry" rule....but EVERYONE did and it was a great time!!! Not having a lot of variety at the costume-rental places forced everyone to get creative and we had some awesome costumes. Complete with silly party games like "Pin the Nose on the Pumpkin" and Bobbing for Apples (and we're all in our 20s). In my opinion, it's something a lot of Argentines find interesting since they've only ever seen how we celebrate Halloween in the movies and on TV... so if you want to celebrate then I say GO FOR IT!