You should try to get in line as soon as possible Friday for your badge because you will likely be waiting in line for many hours. There are a lot of options for food around the convention center, even inexpensive stuff like McDonald's. However if your hotel room has a fridge and microwave I recommend bringing food since it'll probably be cheaper that way. Make sure you have a picture ID so you can pick up your badge without hassle, and make sure you have cash before you leave because the ATMs around Fanime will charge a nasty fee for withdrawals. If you're planning to be outside a lot bring sunscreen. Make sure to dress pretty warm since it'll be hot this weekend, but bring warmer pajamas, and possibly your own blanket depending on your hotel, because it does get pretty cold at night over there. Definitely print your badge confirmation. Wear comfortable shoes because you will be walking a LOT. Bring a plastic bag for dirty laundry. If you plan to shop a lot in dealer's hall, bring an empty bag to fill it with your souvenirs. If you're cosplaying, bring super glue so that you can quickly fix any breaks on props/costumes. Of course you'll need toiletries and such as well. Along with food, having a snack to walk around with is always nice, like a box of Cheez Its or something. Camera! It's always fun to take pics of people's cosplays. Cell phone and charger. This is just off the top of my head. There's no reason to be overwhelmed really, but I understand your concern. My first year of Fanime was overwhelming too. I was worried about forgetting things or being overwhelmed once I arrived at the con. But the con is fun even if you don't have a super strict itinerary planned for every day. Browsing artists alley, dealers hall, going to panels, playing in gaming hall, going to the dance at night, it's all so much fun...there's so much to do that you won't know where to start but as you get through each day you'll see that it's pretty much like clockwork; wake up, get ready, go to the convention center and figure out what to do next, go to hotel and sleep, wake up and repeat. There's not a lot you need other than necessities, food, and a camera.