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I'm going away to London on business on Tuesday to Thursday, and the hotel has WIFI spots in the rooms. I'm taking my laptop down with me - do I just need to buy and slap a WiFi card in my card slot?
If its a semi-new laptop you shouldn't even need a card, most new laptops have them built in. Also, if you were only going to purchase one for this trip, don't bother, typically the hotel provides them for free. It's at least been my experience that they provide them for free if needed.