You are going to hear a bunch of different shoes, but will see the same ones such as Merrill, Teva, Keen and Crocs.
We spent a fortune on new Merrills, Tevas and Keens and we hate all of them! We have been buying waterproof, toe covered shoes for years now as we go in July, so sweat, heat and rain are a big factors for us. Anyway, the shoes we bought were so uncomfortable - it doesn't matter what shoes feel like at home as nothing compares to the parks. Blisters are not a problem for us, but it's the fit and comfort that is. We also wore Crocs, but they are so slippery and unsafe, so we are done with them, not to mention that they are expensive. We always had multiple pairs so as to keep them from wearing down as easily, but they do anyway.
We have done the best in running shoes, but the water can be a problem, but after spending a ton of money on new shoes each and every year, we are now back to running shoes and water/running shoe hybrids for the kids as these provide the most fit, comfort and safety for us in the parks. We love New Balance, so that is what we like to buy. We will alternate shoes, as this works best as well. Hubby and I feel that we have to wear our Merrills and Keens though as they cost us over $100.00 for each pair, so that is an expensive lesson we learned.
Happy shoe shopping, Tiger