I am at the conference now as well and am very similar to you (staying at a condo beach house with 10 other people [grad students and phDs from my lab])... this is my first major conference and I feel very lucky to be here as an undergrad!
The place is pretty freaking crazy (never felt as overwhelmed as I have felt during those poster sessions) but its a blast at the same time (weather is beautiful, gas lamp is a fun area, beach is obviously amazing, etc.)
I highly recommend coming to this conference in the future for anyone doing neuroscience related research!