Hi, Are adapters needed for US type [B] powerplugs to fit into [A] connectors at the venue? And are they available either in Managua or in NYC? (lacking the right name, I call them B2A Adapters) [A] https://upload.wikimedia.org/wikipedia/commons/9/9a/A_plug.jpg [B] https://upload.wikimedia.org/wikipedia/commons/0/0d/B_plug.jpg