It's stressful to move tanks, but I think you're worried something that really isn't that bad.
Just make sure you have enough containers to hold everything. Plan ahead on where you're going to move the tanks to and how you're going to move them back.
Heaters and powerheads to move the water around is all you really need if it is just going to be a few days.
1) Plan where containers are going
2) drain water into those containers
3) move rocks
4) move live stock and add heater and pumps
5) move tank and stands
6) reverse process to set back up
Just a couple tips I learned moving my tanks 7-8 times (it was between two apartments, then to a house, then multiple moves within the house)
- drain the water as low as possible with fish in tank, they're alot easier to catch with only a couple inches of water
- move the rock first, you dont want to crush a fish by accident
- grab some cheap HOB filters if you're worried about nutrients spiking in the temporary containers
- RELAX and TAKE YOUR TIME, don't rush things. Fish and coral travel hours on planes and trucks to get to stores. The hour or two it takes you to transfer everything to a holding container isn't that long
- use this time to frag coral and get rid of anything you don't want
- don't worry about lights, people recommend 3 day black outs to fight dinos and some algae, your coral and fish will be fine without it
- Relax, relax, relax
- if you have sand, leave enough water in the tank to just coat it, some detritus may come to the top, and that 1/2" of water on top makes it easier to clean the detritus out
- put the rock back in first, then use a small pump to get the water in, letting the water run over the rock then into the sand. This will help reduce the amount of nutrients released from the sand, and the tank will clear quicker, making you feel like you did it right