We've stayed offsite several times and often driven to the Boardwalk to eat at one of the restaurants there. The parking lot attendant has just asked why we're there and waves us through without comment, except for "have a good time." Note that we always go to WDW at slower times of the year, and the parking lot is nowhere near full, and we try to park in a more remote corner. And we don't go to a park from there, we just eat and perhaps walk around a little and check things out. But nothing has ever said about a limit on parking time. Previous posters are correct that there is technically a three hour limit, but it only seems to be strictly enforced at busy times when the parking lot spaces are needed for resort guests and those with confirmed ADRs. If a guest isn't told that there is a three hour limit and isn't given a limited time parking pass, they can only assume that the parking lot attendant isn't really worried about the availabilty of parking spaces. Before this causes a uproar, I'm not implying permission for people to park at a resort and then go to a theme park all day just because the attendant didn't tell them they can't. That is trying to beat the system and is not acceptable. I'm only saying that people don't necessary have to stress about adhering to a strict three-hour limit on their visit to the resort unless they're told that it will be enforced.