Things may have changed since son's official visit, but the visit could be no more than 24 hours. Player and parents were invited (extra kids at own expense), hotel and three meals were on the schools expense. Son spent the night with a player.
The spring before, son went up for an unofficial visit and he stayed with a player, went to practice, hung around, asked if he wanted to to go a party (bait? he didn't go), spent the night and we picked him up after practice the next day. Food was at son's expense, but I think the coach gave the host player some money to take son out to dinner?
The official visit included all committed incoming players and their parents and started with a Mexican food catered tailgate before a football game, the football game, dinner at a nice enough restaurant, (drinks at own expense), nice enough hotel, and breakfast the next morning. Only 24 hours.