i would choose coral reef for 2 reasons. i feel it is themed rather nicely and would appeal more to your kids the wolfang pucks would and you are already going to be in epcot. i find it easier to just go out into the park and walk off your dinner for a bit then have to get on a bus or in a car and then travel to the next park.
happy anniversary. we were going to take an anniversary trip this year but with us paying 429 for gas here on long island it has taken a sizeable chunk out of our budget. so no extra trip this year but trying to save for next year