Normal
Absolutely NO PROBLEM with bringing soda onboard. You can carry it on or put it in your suitcase. I do the "other stuff" also with no problem...another "cheaper" option is to take 2L bottles, wrap them up in your suitcase, bring a small collapsable cooler and ask your cabin steward to keep it filled with ice & keep your bottles cold in the cooler. (Fridges are NEVER cold enough IMO) There are glasses provided in your cabin to make yourself a drink. Have a great cruise.