Gibraltar route?
I would be a bit wary about the May/June opening of the new terminal Paully. I was at Gib on Sunday evening and looking at the new terminal I would humbly suggest more like September to me.
As for Jet2 they operate Boeing 733s and 757s so probably not the right type of aircraft for Gib operations but I am no pilot - Captains only landings. BA, Monarch and easyJet all use the A319/320 and easy refused to operate the B737-700 into Gib. Monarch did use the B757 some years ago and had two major incidents so it will be interesting what Jet2 would operate.
Shall we say landing at Gib is ''interesting''.