Weißbier with Banajuice? In some places in Upper bavaria you would be stoned for such heinous crime!!
Btw it's called Weißbier and not Weizenbier!!
And if you have the slightest chance to get one of these:

then drink it.
That's the best Weißbier available on this Planet. Everything else is just Bier.
And the best Place to drink Weißbier is at places like this:
Weißbier with Bananajuice, unbelievable!