My backpack is used exactly the same way. It's my airplane carry on, carries pool stuff, and for groceries, especially when shopping using a resort bus.Bringing a bag or 2 is good planning. Even better planning is to bring a backpack as well. If it's not a large backpack, airlines treat is as personal item, like a purse. My backpack easily carries our two 15-inch laptops, an iPad, and our electrical items: cables, mouse, battery recharger, extension cord, adapters and converter (when needed). Once there, we use the backpack for our heavier groceries (bottles, cans, dairy products, etc.), making the grocery bags easier to carry.