Here are 4 questions on differents situations with my actual "solutions" (but I'm ready to change it depending on your advises):
1) When does the dealers are OBLIGED to count the chips in a NLH tournament?
a) A bet of a player who push in the middle a pack of chips without annoucing the amount and who refuse to count it: YES!
b) The difference between a raise and the initial bet (the initial better ask the dealer the remainder needed to call): NO! (most rooms do it to please the customers but on the rules the dealers are not obliged to do it: aren't the poker players supposed to know how to count?)!
c) The rest of the chips in front of a player in the hand (someone in the hand asked for the remainding amount of chips in front of a live player which refused to count it): NO! (as long as the chips are correctly stacked) ... (most rooms do it to please the customers but on the rules the dealers are not obliged to do it!)!
2) Can a player STACK is chips in disorder? (all the chips are correctly stacked and 100% visible BUT all the colors are mixed): NO!
(you must clearly stack you chips buy denomination because no dealer is obliged to count your chips if asked, so your opponents must be able to correctly evaluate the total amount)!
3) How many actions "in the dark" are permitted? Ex: 3 players still in at the flop but before the flop is showed the players go "in the dark":
A: "I bet 1000" B: "I call" C: "I raise 4000" A: "I go all-in" ... the dealer ask for the floor before putting the flop ... I only accept ONE action in the dark (here A must bet 1000) ... and ask the rest of the player to WAIT for the board card(s) to actually appear and to WAIT for the player "in the dark" to actually bet is announced amount. No penalty here for B & C (and I liberate them for any action) but I warm them not to do it again to avoid a penalty for repeatedly playing out of turn! (?)
4) How to manager a dealor error that makes a player showing "weakness" in a betting round? Exemple with 2 players left at the turn: BEFORE player A speaks the (tired) dealer announces "CHECK" for him (player A didn't allready moved neither say nothing) ... all this making player B (with a flush draw for ex) saying "CHECK" too ... player A complain & ask for the floor and the dealer recognize he made a TOTAL error with the anounce of a check ! ... Actually I follow the traditions, I responsabilise the players (and here B) and ask them to observe their opponents before listening to a dealer ... so here I liberate player A so he can act freely ... BUT isn't it too rude for player B

(I think so)!
Thanks for your advises ...
GG