Welcome to BYC! We're so glad you joined us.

Good luck with your ducklings!
No, you don't need to get up that often, I mean, you do need to sleep!

For water, people will use a pan, put a cookie cooling sheet over it, then the waterer on top. Keeps them out of the water and making a mess. For the waterer, you could get a plastic food storage type container, and cut holes big enough for their head in the lid. That helps keep mess down too.
For the feed, I like to put a paper plate underneath it to catch the food. (If you have the round type of feeder.)
Ducks don't
need anything else other than duck feed, but they do like veggies and its a healthy little snack. Just don't give too much.
I would wait till they're a bit older to give them veggies, and start with small amounts.
Ducks will eat minnows! They don't need them, but its a fun snack! Not sure where you should get them, a fish store would probably have them but I don't know if that's a no no or not...