I have had no problem taking bottles of wine and ligueur aboard ship packing them in the suit case , well protected by the clothing. We get our newspapers delivered and the papers are inside double plastic wrappers; knotting the tops so to enclose the bottles in case of breakage. Never has happened in.
30 years of cruising. I have cruised with Carnival ,Princess as well as Holland America never had a problem. I have even carried 5 liter carton of wine onto the ship without being stopped.