My elementary age kids miss about 5-7 days a school year for vacation. I’d take it kid by kid, case by case. Are they where they should be academically? Are you willing to work with your child o catch up so the burden doesn’t fully fall on the teacher? Is your kid go with the flow, or would missing school and playing catch up stress them out?
I think this country sets a horrible precedent by attempting to restrict so called “unexcused” absences. In most cases it’s about budgeting vs actually caring about a child’s educational needs. Education is a priority, and important. But so is time with your family and self care, and part of that includes vacation. Not everyone has the money, time or luxury to travel on vacation weeks. The US has such a corporate, money, productivity obsession and it starts early with “perfect attendance” awards and punishment for taking time to vacation with your family.
If you think your kid/s would be okay and catch up then take whatever time that you value. You’ll never get to the end of their educational years and say “gee I should’ve never pulled them those 4 extra days in the 4th grade”- willing to bet you’d wish you’d done it more.