We did not ... USER inflated all of the balloons from the set about 8 pieces and little. But ... we have thus a larger foil balloon (motif Minnie Mouse) inflated, plus another foil balloon. At first I had the head of the Mouse half filled with air and gas balloon. Not a good idea ... the lift was not enough. I had to leave it all out again and refill. At first I thought that's enough under any circumstances, I would have ordered only one larger bottle but all fears were unfounded. Balloon slap them, turn on the tap a little and gently push air tip wisely down. All easy to use and feasible without additional support.
Ah yes, the gas cylinder is still not all. Let's see how much we can do with it yet.
A Little Hint. Foil balloons last much longer its effect, compared to the simple latex balloons. We had everything filled to 14am and the balloons have come back down to 23 o'clock. The foil balloons contrast, still have a significant lift after 24 hours.