We've never been to US or IOA, and I'm planning to go for 2 or 3 days on our trip next fall. I'm not sure what to expect. How crowded is US and IOA in mid to late September? Crowds at WDW are really low during this time...is it the same for US and IOA? I know if you stay at a hotel onsite you get FOTL passes but we will be nicely settled in 2 rooms at WDW. Is it worth moving from our Disney resort for 2 nights to get the FOTL pass? (We drive, so will have our car). About how long are most waits during that time period? Also, do the Halloween Horror Nights start that early and if they do, are certain attractions closed during that time?