And how about EDDL? Whilst on the approach to 23R was asked if we wanted 23L. "Yes" we said and were cleared. So I said we would visually manouevre for the swing. "You are not allowed to procede non-visually!" replied the tower. "Therefore, we shall non-visually manouevre for 23 Left". And we were so cleared and therefore had to shut our eyes (but we did peek a bit!). Which Muppet writes their rules?