Work Issues and should I feel guilty?

So I have been working for Walmart for almost 2 years I am Front End Team Lead, so I’m a member of management so to speak. We have inventory coming up in 14 days and the whole store is trying to get ready. I had asked off for a small 4 day vacation. I haven’t had a vacation in over a year. So I asked off Thursday-Sunday. And it was approved over a month ago. Now everyone is like how did you get that off we have inventory coming up. Should I feel guilty for taking a 4 day vacation 14 days from inventory. Like if they had a problem with it they could of denied my time off request and I would of completely understood. I just have a guilty mind 100% of the time.