The rules are as stated but if there is a bar inside the actual casino, the bartender may take orders directly, at their discretion. Sometimes service can be slow (servers swamped) and bartenders will use this as the reason for allowing service (when I asked bartender if if we could order at the bar). Tip a couple bucks every time you order and they will remember you and it wont be an issue.....in my experience. For ships without a bar inside the casino, you can walk into the casino and order from a server, dont think it will be an issue these days as casinos are so packed, many order while not playing at machine. Once again, I don't 'bigtime', but I always tip $1-3 per drink and have never had an issue with service....playing at a machine, table, bar or just standing in casino.