I think if you keep them shaded, they'll be fine!
For Neem Oil if you have several plants, you get a pump sprayer. I got mine at Home Depot. About 10-12 dollars.
I had 600 orchids and a gallon and a half sprayer. In the sprayer I filled it almost completely with water. Then added 3 drops of a mild dish detergent, then a tablespoon of Neem.
Then you pump up the sprayer and spray each infected plant, up, down, up and around, over and under. Let the plant dry off and don't spray if it will sit in the sun. Early morning works best.
You re-spray again in ten days to two weeks. The same way, the same concentration. AND then spray a third and final time ten days to two weeks later. The purpose of the soap is to help the Neem Oil stick to the plant. You repeat this spray once a month as a quick kill and as a preventative.
I was living in Florida when I started using Neem Oil and it did a wonderful job. If you do it faithfully, you can skip a spray after four or five months, the Neem will be in the plants tissues providing protection. But if you spray the beginning cycle and forget to re-apply after a months time, you have to start the program over.
