I can't help with the time to spend in each store, but I can relate to spending money on a stash while you have it. Although we hadn't anticipated that my husband would develop severe vertigo, that required he take a disability retirement and I had to become the only driver, I did spend my money while I was working and had it to spend. I'm thankful now that I did, even though I had to purge nearly half of my fabric, at least 1/3 of that was inherited when my sister passed away, I have been working out of my stash for the last 5 years. I do take an occasional trip to JoAnn's when I need batting, or a fabric to complete a project, but I even made my DGD's quilt entirely from my stash. It was a good feeling, although I do miss having funds to spend at my discretion, I do not regret any of my previous purchases. My one regret is losing my sewing room, but I've adjusted. I do so envy you your shopping trip. Have a blast.