When we were there last you could do a LOS pass, however, if you do not plan on visiting the resorts every day a normal pass if you can get it at a discount rate would be a better bet for you.
No standard room rates at any of the Disney resorts or S/D include your passes. You can get them with certain packages such as the promotion last summer for buy so many days get so many free - I believe that one included tickets.
With the excellent teacher discount, I don't believe there are any others you could combine with it. You could check to see if you were eligible for any others that actually could be cheaper such as AP, etc.
Tubbis & the Dolphin fountain are both great places to eat. I believe the new Fresh is good too from what I have read so far. Check the menu board out for help there. We ate several times at Tubbis and loved it. If you want to get your mugs, they used to be kept at the checkout - make sure you go up and get one before you get your beverage the first time. If I had not known they had them, I would have missed out the first time and purchased a regular glass of soda.
Kids would like the ESPN club too. If you sit in the bar area at one of the booths, you can swap your DL for controllers for the video games so they can play while they are eating. (unless something has changed recently!)