I'd talk to local orchid growers. Tampa conditions are very different than Minnesota (e.g.).
It would seem to me that in Tampa, the misting should go off a few times each hour during the summer. In the winter, maybe a few times per day. The number of times a water friend is needed depends on the heat, time of year, amount of sun, and several other factors, including if you have a generator. i lost some plants in one day when the electricity went out during a summer day.