Synirr
"No one is a failure unless you try"
I see nothing wrong with that tank whatsoever. It's a good size, wider and longer than it is tall so the fish have plenty of swimming space, and basically no different than my 20 gallon long that sits on the floor of my closet. The fish do not notice when you vaccuum around them... in fact, my betta juvies bunch to the front because I'm the food lady, vaccuum or not
. I also sit stuff (soda cans etc) on top of my 80 gallon all the time and my oscar doesn't sense it. Heck, I'm lucky if he looks up and notices at all. The fact is, sounds and vibrations outside the tank have to pass through the air, then the glass, then the water to reach the fish, and every time they pass through a different medium they disperse, so by the time they actually reach the fish the disturbance is generally going to be so minor that it is unnoticeable. Fish are not going to freak out if you set a soda can or magazine on top of their tank. It's not going to feel like an earthquake. Now if you have surround sound and like to turn up the bass for a nice thump, then maybe.... 
As for spilling coffee or soda on that tank, the lid overhangs at the edges to prevent anything from getting into the tank itself.

As for spilling coffee or soda on that tank, the lid overhangs at the edges to prevent anything from getting into the tank itself.
Just my opinion