They REPEAT don't collect any information
And you don't receive PlaceTips from the beacon.
A BLE beacon is a small box costing around £20. It is battery powered, typically with a life of 2 years between changes. As the name implies, it's a beacon - meaning all it does is periodically announce its existence using a unique ID. These announcements can be picked up any Bluetooth enabled device nearby. The beacon doesn't know anything about devices that have picked up their announcements and they are not Internet enabled so couldn't send any such information to Facebook anyway.
It is your phone that talks to Facebook's servers telling them it has detected a particular beacon ID. The server then checks this against a database of registered beacon IDs and hence knows where you are. Therefore for beacons to work with your phone they require (a) Bluetooth to be enabled and (b) the relevant app to be running (in foreground or background).
So if you don't want to be tracked, disable Bluetooth - but remember that every time you upgrade iOS, Apple sneakily turns it on again, or close down the Facebook app.