I thought I'd check in on this thread and share a few practical thoughts after doing 4-5 hour shifts of volunteer outdoor garden/maintenance work in a mask the past couple of days (small group of 5 people, two of which are family members of mine, the other two are not):
1. Fit is key. I wore homemade fabric masks both days. Yesterday's style has a bit of extra fabric bunching in front of my mouth and was pretty icky by the end of the work session. Today's style is a bit more face-formed and was a lot better even though today was warmer and I spent more time in the sun.
2. Not joking here, mints and mint lip balm are also key. Seriously.
3. If we end up going to WDW in July as planned, I'm going to want at least 2-3 clean masks per day to swap out.
4. It wasn't a big deal to keep hydrated by taking one ear off by the elastic and putting it back on afterward.
5. For lunchtime we just made sure we sanitized and wiped down and stayed 6+ feet away from one another.
We'll be back at it next weekend. I plan to try a disposable mask one of the days and see how that compares.