Mine is instant less than a second. I am sure what kind of instant speed you are looking for.
People are hard to please...
There's 2 sleep states, like every other Mac has.
- The instant-on which is sleep. Every Mac has this, every Mac is "instant-on" in this state and this is what you're saying. This takes less than a second. On the MBA, this state is the one of the laptop is in for 1 hour after closing the lid.
- Hibernate. This on HDD based Macs takes about 20-30 seconds to wake up from, shows you a grey screen with a scrollbar. On the MBA, this state is replaced with Deep sleep, which enables 30 days of stand-by time on the battery. However, waking up from deep sleep takes about 5-6 seconds, where you're staring at a black screen.
The MBA isn't any more instant-on than any other Macs. They are all instant on, have been for the longest time. My unibody Macbook was quite instant on. The difference in the MBA is the deep sleep/stand-by time, where incredible stand-by is achieved yet it only takes a few seconds to wake back up from that state.
It is not "instant-on". It's not a question of whining or "not pleasing people", it's just how it works. Yes, the marketing around the "instant-on" thing was poorly done, we all noticed the longer wake times after 1 hour.
So let's not just "jump to Apple's defense!" or call people "trolls" because they say things when you guys obviously don't understand what is being discussed. Get educated on the issue and dig deeper to find the cause and you'll see this is perfectly normal.