re: Zion or Bryce during Mardi Gras week

We went to Moab last Mardi Gras, love Arches and Canyonlands. Cedar Breaks, Capital Reef, and even Great Basin NP were all options but I was worried about snow and trails being open. I really wanted to hike Bryce in the winter if open, Zion is second only because I know the Narrows Trail is not an option in the Winter, and it is truly one trail everyone should hike at least once in a lifetime. Thanks for advice.