I think I shared already how I wrap my cake .... though now, I don't even do that! A few years ago, a friend who does not drink alcohol was going to be eating a good part of the cake. Oh what to do? I was nervous ..... though trundled ahead and prayed. So now, all I do is ..... make the cake. Then wrap in plastic bags, merely by twisting it closed on its own and letting the weight of the cake hold it closed. (I usually cut a 9x13 cake into 4 or 6 pieces at this point). All are put into tupperware container(s). I set it near a register for a couple of days, to let the cake start to sweat a little. Then off it goes to the cold cellar. It will stay there till needed. Then I refrigerate it till good and cold, as it slices much easier. If I'm giving it away, I'll refrigerate, then wrap it pretty in clear plastic and tie on some ribbons.
I don't do the icing .... it seems to disappear without that adornment!
Here too there was the tradition to keep the top layer for the first anniversary and/or first child's christening.
And now, so few seem to have fruitcakes for their weddings. Rather some sort of regular cake all iced. Many don't even have a wedding cake, thinking it is of no need. Ahhhhh another tradition disappearing!