Over the past 8 years I have seen one of the busiest McDonald's stores in the country gradually decline from a stellar success into a dirty embarassment. I will list a few of the things I have experienced here:

1) Yesterday I was given re-heated Mcnuggets again. They were dark brown, dried out and tough. Generally I have found about a 25% chance of being given re-heated or cold McNuggets, last night's were super bad.
2) The staff are SLOW. You must just see it for yourself to believe it.
3) Last week I ordered 2 McFlurries. Staff saw nothing wrong with simply dumping the Oreo cookie powder on top of the ice-cream as the mixer was broken...!
4) Drive Thru - The slow service here is unbelievable. And every drive-thru customer gets greeted by a host of beggars. Charming . Staff are often missing from the "Order" and "Pay" counters despite a queue around the block. Bad planning and chaos in the kitchen makes things worse.
5) Bad Hygiene and dilapidated appearance. That kitchen is a mess.
6) No Menus with calorie info. Even the serving tray liner with the summary info printed on the back is a rare find.
7) Permanent queues. Irate customers. Seems there are NEVER enough cashiers.