Tips for sweepstakes casino players who mail in entries: how to maximize daily bonuses, pick the right casinos, and get the most from every Sweeps Coins entry. Most sites use a 1x playthrough, so 5 free SC means $5 in total play before you can redeem. Check that a game counts toward playthrough before you use it, and skip covering bets on both sides, since sites can treat that as bonus abuse.