So going to Florida in the summer (yay!) just me and dd and I need a bag for themepark days. Im going to be carrying suncream, bottled water, camera, tickets, phone, wipes, cardi etc so needs to be big enough for all these things and I'm thinking one that is backpack type or across body so my hands are free? Also super cheap as I have already had to buy lots of holiday clothes so am skint 
Any ideas or suggestions? Even of the right style for themeparks?