Of course you can use one hotspot, it’s the same as a house WiFi router, each connected device has a different internal IP.
But I hope you have unlimited data plan, because the usage can be very high, depending of the number of planes are in the area (your max range).
I have burned trough 1GB of data plan in 10 days, with just a small amount of planes and MLAT disabled. It’s an open thread here:
