Reaction when I unboxed my first Mac. Hmm, excitement, anticipation, somewhat in awe. Till I turned it on for the first time, then it became an "Are you kidding me" moment. LOL
Background. It was 1991, I was 23 and getting ready to do my post-grad and had saved for yonks to afford this, a Mac LC with 2mb ram and I think the Hd was like 20 or 40mb I cannot remember. Anyhoo, Apple had just started transitioning to System7 and apparently there was insufficient ram for the LC to boot on 2mb.
Of course I didn't know that so kept trying then it bombed!
Took it back to the reseller who said "Aww, how about buying an upgrade or downgrade to sys6." I was really upset and my dad called Apple Corp Hq and explained the situation to them. They said they would call back, which they promptly did a day or so later, directed us to another reseller and said it has been "arranged, please bring your proof of purchase and all the packing material".
We turned up at the reseller and Apple had "arranged" for a PB 140 and Stylewriter as a replacement with a letter of apology and the hope that the PB140 would be more suitable for what I was going to do and that the printer would come in handy.
Reaction when I opened the PB box was excitement, anticipation, somewhat in awe and have been a Mac user ever since.