Depends on what exactly you need/want delivered. There are several delivery services such as Garden Grocer and WeGoShop that will deliver groceries to bell services. If you order something or have something shipped via UPS/FedEx/USPS, you will probably be charged a delivery fee. Anything that gets delivered via courier/in person won't be assessed the delivery fee. This includes Amazon Prime Now.
There are several other threads about delivery, but it comes down to this. GardenGrocer has a set selection of goods with posted prices. These costs are often higher than the actual costs, and you may get hit with a delivery fee. WeGoShop is a personal shopper, who goes to whatever store you want, charges you the receipt cost plus a handling/delivery fee. Amazon Prime Now has a smaller selection in some things (minimal fresh/frozen foods) but prices are much more reasonable, and if you have Prime there is no delivery cost. I've used all 3 several times, I don't like the prices Garden Grocer charges, don't like not knowing exactly what a store will carry so WeGoShop might not be able to get everything I want, and Prime Now requires some juggling of my list to get what I need. They all have pros/cons.
If you just want things like cereal and bagels, and aren't up against your baggage allowance on your airline, might be cheapest to just buy them at home and check a cardboard box full that you leave behind. (Or an extra suitcase you bring back full of souvenirs)