I have close to 30 of them surrounding that patio and am rather well versed in these things, so here goes.
- They do require maintenance, but there is a $15 mineral filter sold at Lowes, HD, etc., that makes this almost a non-problem. With street pressure they will occasionally clog, and all I do is pull them out and bang them on the ground.
- The lines CAN get stinky with stagnant water, but I replaced a mister at the far end of the patio with a screw-in relief valve. As soon as the water gets shut off and pressure drops, the lines drain out onto the lawn.
- The problem with awnings, unless it's really hot and dry is that with maybe 60psi driving them so close to you, things are going to get wet. It's more of a thick mist than a fog. My system is permanently installed 1/2" PVC being driven by a 160PSI compressor hidden in the plants. By far the best improvement to the system. It went from water on the patio and curled up magazine and papers to a nice wall of fog.
IMO, tie 2 (only) to a fan and enjoy