air force tech school traveling off base more than 150 miles (Phase 3)?

Is permission routinely given for students at tech school to travel more 150 miles on weekends (Phase 3)? I read online that students may travel up to 150 miles. Is it the norm for students to be allowed to travel more than that?

http://usmilitary.about.com/od/airforcejoin/a/techschoolrest2_2.htm
"may travel up to 150 miles on weekends"

I went to Disney World when I was at tech school.....I guess there were rules, but we took the chance anyway.