Exploring the city/surrounding area is another factor, definitely. For example, I won't usually stay late on Sunday of Otakon to 'explore' in Baltimore (I'm from the Mid-Atlantic, and with family nearby there I get to go relatively often); but if I could swing a couple extra hours in NYC after NYCC, I'd be all for that.
Sleep is also a bonus factor. If you plan on doing things late at night on Saturday, make sure you're well-rested before you travel!
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- Suzuha Amane (Steins;Gate): 95% (Final Details) Katsucon 2015
- Magic Armor Link (LoZ: Twilight Princess): 22% (Patterning) Katsucon 2015
- Human Beatrice (Over the Garden Wall): 29% (Sewing) Katsucon 2015
- Emperor Lelouch (Code Geass): 2% (Planning) Spring 2015