I'll get this out of the way first. The work looks nice.
2 things I noticed since you asked.
The first is the block right up against the fire ring. Although better than nothing, it would be even better to place a gap between the ring and block and fill with loose gravel. The air in the gravel voids tends to help insulate and keep the block cooler thereby last longer before cracking.
The other is the one with a raised patio with separated seat wall and topsoil over the gravel. Your planter and client will thank you if you dig out a little in the center before covering with topsoil. There are few experiences more miserable than having to remove the soil and then pick out the base in order to fit a decent plant selection.