Vents are not right.
On the kitchen you have basically an "S" trap, drain goes down without a vent...
Where the drain enters the wall you should go up and tie the vent into the main stack in the overhead.
On a 1-1/2 drain you can go 3-1/2 feet before the vent. Vent must run vertical or at a 45 degree angle until it is 6 inches above the flood rim of the sink. you can then go horizontal.
I do not like the use of the AAV, those are ment to be a last resort, if the walls are open run the vent up and tie into the other vents, remember you have to tie in above the flood rim of whatever is being serviced.
Vent on the bathtub needs to go up higher as well. It needs to be six inches above the flood rim of the bathtub or toilet, which ever is higher at a minimum before tieing into the stack.