Multiple-user slowdown typically occurs with the old Ku-Band satellite systems (it’s called “contention”), but that doesn’t apply to the modern Ka-Band ViaSat “First Responder Priority” Plans and modern satellite spot-beam technology. Your data rate is always at full speed and has priority on the satellite over all other users, except for certain government use. You will get high speed internet and cell service even in the middle of a major incident. And you don’t have to pay extra for it.