not sure if this is specific to harrahs rincon or all harrahs but if playing vp and you accumulate 5000 tier credits (50,000 coin in) without pulling your card (jackpot, taking a break, etc...) you might not get credit for following play. their software detects this as unusual play and puts a stop on tier credits and rc accumulation. it can be quite cumbersome to get the credits restored. to avoid this, after 4700 or so tier credits just pull the card and put it right back in.
