Zion National Park in the middle of January 2021

Hey guys, turns out I can take a few days off around Jan 15 and I'm planning on visiting Zion and Arches national park and I could really use some guidance of people who have been there around same time in past years. I won't be alone, as I'll be with my friends and we're just looking to explore good places in those parks, mainly sightseeing and going on some easy to medium hikes - nothing extreme. We're planning to spend 4 days there. We have decided that camping won't be a good idea because of the cold weather but I'm curious to know what are all the things we should consider and which places are safe and which places are a strict no. Any help would be appreciated, thank you :)