I can’t find a cite, though.
Mrs. Plant says that the loser at work she gives rides to work for, is asked at the drive through window, “Do you want a sack?” (We have sacks instead of bags, down here.) Having managed some businesses, she mentioned that if she could save three cents per customer, she’d ask if they wanted a sack.
I couldn’t find the law that applies to MA. My understanding is stores selling alcohol must offer bags. There is no requirement that customers use them so a store doesn’t have to force a bag on anyone.
You’re correct, there is no such state law here. Unfortunately there is also no preemption law in Wisconsin either on some issues regarding liquor. Which means local municipalities can set their own ordinances on some things. This is why when I get off of work tonight I either have to sit in a bar or drive all the way to [Mequon, Pewaukee, Sturtevant] if I want to buy some beer to drink at home because all of Milwaukee County has an ordinance that stops sales at 9PM as opposed to state law that says midnight.
And this may be the answer to the OP. While a state may or may not require a bag, local laws might. Also, there are a lot of common beliefs that are wrong. There may be no law that says you need a bag, but if some clerk or store manager thinks it true don’t waste your breath arguing with them.
There is a township down in Racine County that has a bag ordinance.
There are county laws here, too. I dated a woman in another county, and guys would be racing home across single lane bridges over the Saline river, sampling as they drove back from another county’s liquor stores. 
Speaking of that, I see a lot of these types of signs in chain grocery stores around here.
The thing is, if you read statute 125.32(6) it doesn’t exactly say what they think it says. (They’re afraid that by allowing returns on alcohol it’s a transaction from an unlicensed person). Not only does the law not specifically address returns, I was an alcohol compliance investigator for 4 years and know of no case law prohibiting returns.
But when a store believes this you’re S.O.L. if you get a “skunky” 6 pack of Heineken.
So prohibition never really left us, eh?
Not in the Bible belt. :dubious:
Dang straight! (but not straight whiskey!).
I was driving back from Florida one year, alone. I stopped for the night somewhere in Kentucky. I bought a take out lunch at a little diner and stopped at 3 or 4 gas stations and convenience stores looking to buy beer to take back to my motel room.
Imagine this Wisconsin* boys shock to find out he done stopped in a dry county and the nearest brewski was 19 miles down the road!:smack::eek::(:mad:
Gawd darned lunch was cold when I got back from the 38 mile round trip! 
*Drunkest Place on Earth.®
Or, as is the case for one location I visited, not for small town next to an army base that just got sick of it all.
Not in Manitoba. They prefer to bag bottles, but there is no legal requirement. My cite is a conversation with two guys I went to high school with who own a liquor store. Not a Liquor Commission, which is a pretty rare thing in this province. What is best is that it’s smack dab in the centre of a dry municipality. No, wait, better yet is that it’s only 3 miles from my house, in the middle of a dry municipality. Want gin on a Sunday afternoon? It’s just down the country road
Hey! I resemble that remark!