Clarify strategy - add to cart or separate session?
For those experienced cart users this is possibly a dumb question
Just trying to get something clear in my head
When traversing an order....
...should I ....
...Only add items to the cart if they are needed in the cart calculation process.
All other data should be stored in session variables and push that into the final order info in the database
or
It doesn't matter if the odd bit of data gets stored in the cart?