As long as the diameter of the supply line is sufficient to get enough fuel to the engine at full throttle, then it should be fine. If you haven't had any trouble with the engine acting like it was fuel starved, I wouldn't worry about it. However, if the fuel hose(s) are more than a few years old, I would replace them with some of the new ultra-low permeability hose. The standards have been updated recently, and the new stuff is much better.
The return line should be the same diameter as the supply line. The vent line for the tank is usually a bit larger.
Never forget them. Do something to prevent it from happening again.
Charlotte Bacon, Daniel Barden, Rachel Davino, Olivia Josephine Gay, Ana M. Marquez-Greene, Dylan Hockley, Dawn Hochsprung, Madeleine F. Hsu, Catherine V. Hubbard, Chase Kowalski, Jesse Lewis, James Mattioli , Grace McDonnell, Anne Marie Murphy, Emilie Parker, Jack Pinto, Noah Pozner, Caroline Previdi, Jessica Rekos, Avielle Richman, Lauren Rousseau, Mary Sherlach, Victoria Soto, Benjamin Wheeler, Allison N. Wyatt