We do two table service meals almost every day, because we like having the mid-day break where we feel a little more pampered.
Seriously, I sometimes feel like by the time I wait in line for my food, find a free table, and eat my meal, I might as well have been relaxing in a sit down restaurant with someone to refill my drinks for me!
Your ADR at Coral Reef is early enough, that looks like when it opens, that you won't have much wait. The meal isn't ridiculously time consuming, but the waits before the meals can get so. Once you're seated, if you tell your waiter in a friendly manner that you're in a little bit of a hurry, and you'd appreciate it if he could do what he can to expedite things for you, you may be able to get through the meal pretty fast.
You may have a long wait at Akershus. I think that was where we had the longest wait for an ADR ever. Our ADR was for later than yours (7:45 instead of 6:30), and we waited for about an hour. (They are more likely to be running closer to on time earlier in the evening, though.) I was not happy with the wait. I was happy with the meal itself and the character interaction, once we finally made it into the restaurant. Again, the meal isn't slow once you get into the restaurant. The first course you get yourself from the smorgasbord, so you can eat that as fast as you want to. You order your entree, which you do have to wait for, but ours came out pretty fast. The dessert, at least when we went, you didn't order, they just brought it out to the table once you finished your entree. The catch here is that you want to stay long enough for all the princesses to come to your table. So even if you rush through your meal, you may need to wait on the princesses. Are you doing CRT in MK? If not, and you want to see princesses, Akershus is a must do
We consider some of the interesting dining venues as much as part of our trips as riding every ride or seeing every show. I think you've made two really good choices, as both the Coral Reef and Akershus are restaurant experiences you couldn't get almost anywhere else in the world. (Could you get better food? Yes. But the overall experience is unique.) For what its worth, DS asks to go to the Coral Reef for lunch every time we go to WDW. It made a huge impression on him; he loves eating near the giant aquarium more than he loves just about anything else in Epcot.
