I actually thought Stadium:mk was bloody terrible.
We didn't even know it was the stadium as we approached. Looked more like a multi-storey car park.
Liked the internal layout when we first got in (open concourse), but half time showed how horribly impractical it was. No pints allowed on the concourse meant that the bar areas were closed off, which really didn't work.
Nipped into one of the bars for a pint at HT and stood like a sardine in a tin for about 5 mins. After getting nowhere and seeing numerous pints spilled as people tried to move from the bar, we gave up and moved to the next bar, hoping it would be better.
In fact, the next bar was so rammed, they weren't letting any more people in. Fans tried to force their way in, stewards tried to stop them, and the partition ended up being toppled over. Disaster.
And we didn't even sell out the full allocation.
Location was awful too, though can't really complain about that as a Cov fan!