Whether you need a reservation for the Guadalupe River depends on the type of experience you are seeking. For general tubing, reservations are typically not required if you are renting from a local outfitter in New Braunfels; most operate on a walk-up basis. However, during peak summer weekends and holidays (like July 4th or Memorial Day), outfitters can reach capacity, so booking in advance is highly recommended to secure your equipment and shuttle spot. If you plan on camping at a riverside park or renting a private pavilion at locations like Cypress Bend Park, you must make reservations through the city's parks department well in advance. Keep in mind that tubing is subject to the "river flow rate"; if the flow exceeds 1,000–1,200 cfs, tubing may be restricted to raft and kayak trips only. Always check the current flow status and local ordinances regarding "can bans" (disposable container restrictions) before heading out to ensure a smooth and legal outing.