yea .. suitable places to fly lama and other similar sized heli will be multipurpose hall or multistory carpark .. coz they cant really take the wind in outdoor flight.
RC Heli is challenging, true.. anyone here who has the patient (and spare $$$) to maintain marine tank, i dont see why they cant fly heli... but be prepared to spend on replacement parts .. coz they crash often (common for 1st timer)