We could teleport you into a fluffy bouncy comfy room with inflatable walls.

The insurance company just needs to lease out one of those giant trampoline bounce houses to teleport all of its policyholders into.

What happens when two accidents happen at the "same" time?

Whoever is running the teleporter would have to have "collision avoidance" strategies I guess. :-)

Then how does it slow Enterprise's crew from orbital velocity when beaming them down to a planet?

The ship is on a geostationary orbit, obviously.

There's around 4 km/s difference between geostationary orbital speed and the surface of the Earth. For a zero inclination circular orbit, you'd need to be at an altitude of ~1855000 km to have linear velocity equal to the nadir on Earth's surface.

Okay the mental image of this is pretty funny, I will admit.