Emphasis on re enforcing the connections. If a delivery team assembles your bed, go in after them and make sure all the hardware is present and tight. I repair retail furniture professionally and I can’t count how many bedframes are absolutely trashed from lackluster assembly. Support legs in the slats should be tight and straight up and down, all hardware should be torqued on those corner brackets. The headboard should have a little play at the top because of the weight but none at the bottom.