What must I check before kick-off?

Under the SAFA Competitions Uniform Rules and the Laws of the Game:

• Team sheets at least 45 minutes before kick-off: 11 starters and up to 7 substitutes with registration numbers, and the team officials in the technical area (Rule 10).
• Registration cards must be available one hour before kick-off. Check every player's card in the presence of both teams' representatives and the players. No card, no play, without exception (Rule 11).
• Benches: no more than 7 substitutes and 5 team officials, who must hold SAFA registration cards. Remove anyone without a card or over the limit from the field (Rules 5.6, 6.2, 6.3).
• Objections: if a team objects to an opposing player before kick-off, it must be in writing on the team sheet, handed to you with the senior assistant referee present, countersigned by the opposing captain, and endorsed in your report (Rule 18.2).
• Kit (Law 4): inspect players before kick-off and substitutes before they enter. Shinguards must be covered by socks; remove anything dangerous.
• Colours: if they could cause confusion, the visiting team changes; goalkeepers must contrast (Rule 29).
• Match commissioner: where one is appointed, both teams attend a pre-match meeting at least 60 minutes before kick-off (Rule 30).