So long as it doesn’t exceed the recommended weight limit or interfere with the trailer wheels or towing bike, the Atlas can be loaded with with anything that fits the base.
It is ideal for carrying extra luggage on a tandem tour, doing the shopping or visiting the recycling plant. Whenever there is the need to carry some extra cargo, the Atlas is ready.

In short, yes. The hitch can be rotated to allow for different axle heights/wheel sizes. If you are thinking of using the Atlas with an unusual configuration, it would be worth checking first.

If fitted correctly, the hitch should not cause any damage to your bike.

Towing a trailer does have some effect on the handling of the bike. It adds weight which slows acceleration and increases stopping distances. It is also wider than a bike and this has to be allowed for in cornering and going through barriers. Generally, after a short familiarisation period, towing the Atlas is hardly noticeable.

Extremely! It can be folded in less than a minute and does not require tools.