Let me answer your question briefly first.
1 Yes, this is the general trend, no doubt.
2 Use Warcraft 1.20e for combat. Dota uses Warcraft1.24b. If it is held in an Internet cafe, you don't need to consider these issues, and players are familiar with the version of Warcraft, so you can solve it yourself.
3① Echo Island ② Cylindrical and ③ Labyrinthine; ④ Strange stone ⑤ Twisted line ⑤ Numbness.
These are all 1v 1 game diagrams, and 1456 is commonly used.
Generally speaking, the finalist is eliminated in one game, and the semi-final is two wins in three games. If circumstances permit, the final can win three out of five games.
Note: You can ask me directly with QQ.
The referee doesn't need to pay attention to anything, as long as he sits outside the visual range of the two players. In addition, don't reveal the player's actions during the game. You should know how to keep silent during the game and save the game intermittently every ten minutes, so that if an unexpected situation causes the players to interrupt the game, they can continue the game in the game saved by the referee. In fact, the main purpose of using referees is to maintain the fairness of the game. Because if one player's computer is used as the host, the delay of the game played as the host will be less, and it will also have an advantage if you grab shoes in the wild. Referees are used to maintain harmony in this respect, but if you are in an Internet cafe, it is impossible for you to occupy so many computers as a referee, so you can only use referees in the finals and rematch before the rematch.
Every e-sports contest is held in an Internet cafe near our school, but we don't spend money, and the Internet cafe provides venues for free. In this respect, the landlord can learn from our method: we contact the owner of the internet cafe ourselves and tell him that we intend to hold an e-sports competition in his internet cafe, which will improve the popularity of his internet cafe in our school and only take up less business in the morning. Why not do it in an Internet cafe? In addition, we require each contestant to pay the registration fee of 5 yuan. No matter whether you win or lose, the Internet cafe will provide each player with online time for the whole morning, so 5 yuan is not wronged at all, and we take the registration fee paid by the players as a bonus. The amount of bonus depends on your situation. As for using this opportunity to make money, don't think about it. Since you are keen on this activity, why make this money?
You can add me QQ: 395455054 if you have any questions. My answer is all typed by hand, without technical terms. The landlord should understand.