Hello, the capacity is for 6 place settings, meaning 6 plates, cups, bowls and silverware, you can see the picture of a fully loaded unit on the following link:

http://www.danby.com/en/CA/our_products/specialty/ddw611wled

Hello VT, the hoses for our units are standard and we do not offer extensions at the moment.

Hello Trina, as Iong as the dishes follow the guidelines of the manual then they should be ok for cleaning in the dishwasher. To check the manual please click on the following link:
http://www.danby.com/cms/documents/pdfs/en/DDW611WLED_EFOM_%28DM%29_Revised_Jan.28.11.pdf

It is not recommended to stack the units one on top of another, as they produce heat and could affect the operation. Also need proper air circulation.

The DDW611WLED tap adapter needs to be able to screw into the threaded section at the end of your faucet's aerator. The aerator is the screen piece that sits at the end of your faucet. You should be able to remove the aerator to find the threads.

If you are unsure if your faucet supports the adapter, please take the brand of faucet to your nearest hardware store and they should be able to confirm if the model will support any sort of an adapter.