Wigan Athletic chairman Dave Whelan has hailed the character of Roberto Martinez's squad.
Wigan face Millwall in the FA Cup semifinals this weekend.
"We've let them loose before but they don't booze, our lads," Whelan told the Daily Star. "Roberto doesn't allow them to do it. Full stop. If you drink, you don't play for Roberto.
"A lot of them will be involved in World Cup qualifiers so getting them to Barbados might be problematical, but we'll get them to a place for pre-season training that they'll really enjoy.
"They're all on a straight bonus anyway. What they did last year, was give half their combined bonus to the 'Wigan Boys & Girls Club'.
"They donated £1m between them. The place is scheduled to open in two weeks. It sets a precedent for other clubs that does."