###INSTRUCTION: Fix grammaticality of the sentence: At last but not least, a couple of complaint about the organisations itself: first, in the information sheet you provided there were any directions or any map within how to reach the conference centre (quite complicated near you don't know this part of the city); second, the lunch was a huge mess, has to gone to separate stands for each food (one for fishes, another within vegetables, etc) and having to makes queue every times.
###RESPONSE: 
And last but not least, a couple of complaints about the organisation itself: first, in the information sheet you provided there were no directions or map of how to reach the conference centre (quite complicated if you don't know this part of the city); second, the lunch was a huge mess, having to go to separate stands for each dish (one for fish, another for vegetables, etc) and having to form queues every time.
At last but not least, a couple of complaints about the organizations themselves: first, in the information sheet you provided there were any directions or any map within how to reach the conference center (naturally quite complicated near you don't know this part of the city),; second, the lunch was a huge mess, had to go to separate stand for each food, and having to make a long queues every time.