We have only volunteered, USFS, USACE, USF&W, and state parks in Illinois and Florida with 20-24 hours normal except for Illinois that wanted one of us on site from 10 am -10 pm for 3 days one week 4 days the next, we didn't do anything but write permits and answer questions.
All of our positions have been in areas we want to explore and have no complaints but have found we most enjoy USF&W refuges. Plenty of maintenance projects to keep me busy and interpretative jobs and wildlife to keep DW happy.
We do not take positions without full hookups.