I have gone every year for 25 years and it is huge. I would suggest if you can comfortably wear a back pack or carry a light weight tote bag it is a good idea. In years past, walkers were allowed but only with a doctor's permit. Buy the program and mark the booths you would like to revisit. There are people from all over the world there and sadly many leave the manners at home. Comfortable shoes are a must. Wear what is comfortable. There is so much to see, hear, learn and buy. Enjoy your visit.