I don't have holidays count but we have a 'holiday shutdown' for 5 days between Christmas and New Years, mandatory you can't work, but you burn your own vacatio

I don't have holidays count but we have a 'holiday shutdown' for 5 days between Christmas and New Years, mandatory you can't work, but you burn your own vacation time. And I only get 2 weeks! Other options include taking the week unpaid, or working during the the other weeks in the year when you hvae a holiday and 'floating' it to the holiday shutdown. So next week I have memorial day off, but I'll make sure to work >40 hours in the remaining 4 days. Is 1 extra week of vacation really going to change the productivity of the place?