Possible Clues:

• Those in 10 across found on ocean liner with 26 across and endless types that are drunk
• Those in 24 down found on the beach with 8 across and endless types that are drunk
• Those in 9 across as well as 8 across, on top of sweets, won't give you a beer belly presumably
• Many of those usually behind bars with 24 across on ocean liner with 8 across from school
• Liquor store offerings
• Sign for some alcohol sellers
• Drinking partners witness'd in pairs, perhaps