Anyone that has had some decent dance training should have been taught right in the beginning to be courteous to other dancers, and to take into account their own capabilities.
This will ensure that all on the floor are being taken into account when you move around the dance floor.
Dance, don't barge people out of the way, and if you are going dancing, it should be the same as driving.
Don't drink and drive, and the same goes for dancing, dont drink and dance.
Lastly, all age groups go dancing for the enjoyment thereof, and all age groups have different capabilities, respect each other.
Happy dancing.