I won't count on it. The kids are out of school so there will be more competition for 2 & 3 bedroom from families looking to vacation.
Here are snapshots of what I saw for June/July in 2009 & 2010. Sorry I didn't record 2011.
Sighted on 6-22-2010 for Open Season dates 6/22 to 7/21
Hilton Grand Vacations Club at SeaWorld International Center, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/23-07/21
2 Bedroom 06/25-07/21
3 Bedroom 06/22-06/25, 06/30-07/01, 07/05-07/11, 07/13-07/14, 07/16-07/20
Studio 06/22-06/23, 06/28-07/21
Parc Soleil By Hilton Grand Vacations Club, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/25-07/02, 07/05-07/12, 07/18-07/21
2 Bedroom 06/26-07/02, 07/05-07/06, 07/08-07/13, 07/15-07/16, 07/19-07/21
3 Bedroom 07/12-07/13, 07/15-07/16
Studio 06/24-07/01, 07/03-07/21
Hilton Grand Vacations Club on International Drive, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/22-06/23, 06/27-07/21
2 Bedroom 06/22-06/23, 06/27-07/05, 07/08-07/14, 07/16-07/21
3 Bedroom 07/01-07/03, 07/10-07/11, 07/19-07/20
Studio 06/22-06/24, 06/26-07/21
Sighted on 6-16-2009 for Open Season dates 6/16 to 7/15
Hilton Grand Vacations Club at SeaWorld International Center, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/16-06/17, 06/19-06/24, 06/26-06/30, 07/05-07/08, 07/10-07/15
2 Bedroom 06/17-06/23, 06/30-07/01, 07/04-07/15
3 Bedroom 06/18-06/19, 07/14-07/15
Studio 06/18-07/01, 07/05-07/15
Parc Soleil By Hilton Grand Vacations Club, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/19-06/30, 07/06-07/13
2 Bedroom 06/19-06/23, 06/27-06/28, 07/07-07/13
3 Bedroom 06/27-06/28, 07/11-07/12
Studio 06/18-06/30, 07/05-07/15
Hilton Grand Vacations Club on International Drive, Orlando, Florida
Unit Type Dates Available
1 Bedroom 06/19-06/28, 06/30-07/01, 07/05-07/06, 07/11-07/15
2 Bedroom 06/19-06/20, 06/22-06/23, 07/05-07/06, 07/12-07/14
3 Bedroom 07/12-07/13
Studio 06/17-06/20, 06/22-06/25, 07/04-07/15
Good Luck
