No beds are set up but you can pull them off the shelf and try them out. Id call just in case this sams club closes up the day you wanna shop there. Sams club is known for closing without notice
Yes there is mattress on display
Yes they have some beds. Limited selection. Not comfortable options to test. Best is to buy it online. Test it at home. Then return it if you don't want it.
Nothing to add.
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