Hi I had the same from my local BMW dealer so I went to a different dealer. Couldn’t get a 24 hour test drive but got a whole day test drive and when I returned they asked what they could do to get my custom! I was a bit surprised by that and wasn’t sure what to say so they offered me Apple Car Play for free!
I did get a 48 hour test drive really easily from Mini (I already drive a Clubman). Went for the X1 instead of the Mini though as the X1 has a better spec.