Can they place the masonry edge restraints in the dirt and fill around it?
I come across this issue with masons in a hurry. No you can not!!! The whole point is to hold your patio firm for years not months. Make sure the restraints they use, if masonry, are placed in a mix of either wet concrete or concrete sand and pure cement mixed together in a moist fashion. Placed on top of a compactable soil or crushed stone base if necessary. Most cases the base can be placed on compacted earth.
