I am having serious issue with mkr 1010 and WiFi in the real world.
The issue of commen SSIDs over multiple access points has bee raised in the wifinina library on github even after a year or more its very hard to get any information on if there will be an update to the library and firmware.
The other issue I have is the Signal strength seems to be related to the orientation of the MKr 1010 and it can make moro thn 30-40db on the received signal strength ie RSSI.
So ok in a lab you can position the arduino in a specific direction or put foil behing it as one of the arduino support team suggested . But in the real world this just is not practical.
I quote
".....Set up a metallic reflector behind the board but facing your router (or vice versa).
Make sure that there is no risk at all of the board or any other component touching the metallic surface.
This helps to reflect part of the signal that was lost back in the desired direction."
Sounds like they are aware they have issues but as yet have not got a fix.