Love the island, it's beautiful in my kitchen.
In the center shelving area I've placed my kitchenaid stand mixer. It is too tall to allow for a shelf to be placed in this area. In the cabinets, I have a blender stored with other items on the bottom shelf and two shelves.
In the final cabinet, I have my food processor on the bottom and room for one shelf.
When delivered they opened the bottom first, the packaged shelves and granite insert were not secured well and fell out. Thankfully no damage. I was prepared with furniture movers to go underneath to make it easier on me to push around and place. The only assembly was putting the knobs on the drawersdoors, putting in shelves and placing drawer inserts.
It's beautiful.  I've read reviews of some owners having the counter top crack, over time. I will keep an eye out for that and get wood putty if needed.