I'm on breakaway. Speed about 2.75 Mbps.
Sharing hotspot with a friend in cabin directly across the hallway, and when we're out and about in the bar at night. No problems surfing, WhatsApp, emails etc over the 1 connection being shared.
In fact, last night, there were 5 of us in a bar and only I with the internet. They all connected for a few mins and got up to date with messages etc .
Netflix standard definition only needs 3mbps, so emails etc are not a problem.
I speak of my experience on Breakaway, but if you're getting speed between 2.5 and 3, should be fine .
(I'm also able to check home 4 camera CCTV no probs).