Aww so sorry this happened o you. There is a thread going on right now about posting your worst cake. You should go on it and see other disaster cakes. Post yours if you have a picture. It might make you feel better. ((((hugs))))
I have made a 4 tier wedding cake with only bubble straws holding it up. And that's a heavy cake!
I pretty much go by AZCouture's example list but I add 1 or 2 more than hers for 9" tiers and over. It may be unnecessary but it's for my peace of mind!
Thanks Maybenot for saving me the trouble to type exactly what I wanted to say!
I used to use wood dowels but since discovering the bubble tea straws, I converted. Another plus is that they are so super easy to cut!