I have the summer operations confirmed by LS taking into account the A320 below:

"A total of 6 aircraft will be based at NCL for S13. The NCL based fleet will consist of 3 737-300's, 2 757's and 1 leased A320. The aircraft will operate as shown below on the schedule for 1st week in August.
MONDAY
733 - NCL-ALC-NCL-IBZ-NCL
733 - NCL-REU-NCL-KRK-NCL
733 - NCL-FAO-NCL-ORK-NCL
757 - NCL-PMI-NCL-BJV-NCL
757 - NCL-CFU-NCL-DLM-NCL
A320 - NCL-AGP-NCL-MJV-NCL
TUESDAY
733 - NCL-ALC-NCL-PUY-NCL
733 - NCL-AGP-NCL
733 - NCL-FAO-NCL
757 - NCL-TFS-NCL
757 - NCL-HER-NCL
A320 - NCL-PMI-NCL-MAH-NCL
WEDNESDAY
733 - NCL-ALC-NCL-KRK-NCL
733 - NCL-FAO-NCL
733 - NCL-PSA-NCL-DBV-NCL
757 - NCL-PMI-NCL-RHO-NCL
757 - NCL-PFO-NCL
A320 - NCL-AGP-NCL-MJV-NCL
THURSDAY
733 - NCL-VCE-NCL-REU-NCL
733 - NCL-FAO-NCL-MJV-NCL
733 - NCL-FCO-NCL
757 - NCL-AGP-NCL-DLM-NCL
757 - NCL-PMI-NCL-ACE-NCL
A320 - NCL-ALC-NCL-IBZ-NCL
FRIDAY
733 - NCL-AGP-NCL-MJV-NCL
733 - NCL-FAO-NCL-ORK-NCL
733 - NCL-IBZ-NCL-KRK-NCL
757 - NCL-ALC-NCL-TFS-NCL
757 - NCL-PMI-NCL-DLM-NCL
A320 - NCL-MAH-NCL-PMI-NCL
SATURDAY
733 - NCL-ALC-NCL-PMI-NCL
733 - NCL-FAO-NCL-PSA-NCL
733 - NCL-MJV-NCL-MAH-NCL
757 - NCL-AGP-NCL-LPA-NCL
757 - NCL-PMI-NCL-TFS-NCL
A320 - NCL-IBZ-NCL-ALC-NCL
SUNDAY
733 - NCL-FAO-NCL-MJV-NCL
733 - NCL-FCO-NCL-VCE-NCL
733 - NCL-DBV-NCL-PRG-NCL
757 - NCL-ALC-NCL-PFO-NCL
757 - NCL-PMI-NCL-ACE-NCL
A320 - NCL-AGP-NCL-IBZ-NCL
LS will wet lease a 168 seater A320, registration G-POWI, between the 8th May and 15th September from STN based Titan Airways. The aircraft will have basic LS decals applied prior to entering service and will be crewed by Titan for the duration of the lease. The A320 was only delivered to Titan less than 3 weeks ago and only entered revenue service a week ago."