Many U.S. businesses, including grocery stores, will operate with modified hours on New Year's Eve and New Year's Day. While some stores like Walmart plan to remain open with regular or extended hours, others like Target will close early on New Year's Eve. Shipping services such as UPS and FedEx will also have adjusted schedules. Consumers are advised to verify specific hours for individual locations and services to avoid last-minute inconveniences during the holiday period.