No need to take the hotel has hair dryer, iron, microwave, mini bar, safe
110V. All the places I've stayed there the voltage is 110V, but the standard of outlets is different, do not take hair dryer, all hotels have a hairdryer in each bathroom with a smaller power but solves it. Just can not forget an adapter for the mobile phone charger there all the plugs are flat pin and not round like ours here in Brazil.
Orlando is 110wlz ... in the convenience store the hotel sells adapters and the rooms have hair dryer.
The hotel has a hairdryer. But I believe it is 110. The best thing would be for you to contact the hotel to clear your doubts.
In the hotel there is hair dryer, no need to bring. Anyway the voltage is 220v
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