Better, because I'm of drinking age now.

so true
Now, being serious ...... I made my cabinet to have an internal skeleton of 2x4 beams. The thing is rock solid so having friends over beating up on the controls and shaking the machine around a bit does not cause me to worry at all. If I made it with a thin outer shell of wood and decided to staple the joints together then I would be much more concerned.
Of course if you spill a drink all over it then I would be highly annoyed ... however, in the true arcades I would simply keep playing.
