If you keep the holes covered with strategically placed "stuff", she may or notice for quite some time.Well I haven't loaded anything in a while due to it being like a dang pizza oven in my garage, so a couple days ago I moved everything inside and mounted my press to the dining table. My wife doesn't seem to know that I drilled 2 holes in the table yet, but what is done is done!
Then, when she asks about those holes, you can say "You haven't noticed those before this? They've been there a long time... ".