We did this cruise 9th-16th Feb 2012 on Thomson Celebration and enjoyed it very much. On Friday in Aquaba there is a courtesy shuttle to the town (local map available on board). It's an interesting place to spend a while strolling round. Very nice welcoming people and some good restaurants for lunch. It's a duty free zone. Exchange rate virtually '£1=1 dinar.
On Saturday the Petra trip ('£110) is a must (there were 12 coaches-650 people!) but do take heed and take layers of warm clothes as it can be very cold in the mountains. Depart ship 8.30 and arrive Petra 11.00 after 20 min comfort stop. The guided walk to the bottom takes 2 '½ hours at a leisurely pace (take good walking footwear !). The walk back to Hotel for lunch is about 1 hr. Very nice lunch if you enjoy the local cuisine (which we do). We departed at 4pm and back on board by 6pm.
Sunday-day at sea. Monday should have been Port Sokhna but a local industrial dispute in the port so anchored at Suez and tendered ashore for excursions. Both Port Sokhna and Safaga are not places to get off ship and wander round. They are industrial ports with nothing nearby for tourists to see -- stay on ship! The Cairo museum excursion was cancelled due to problems in Tahrir Square but all others went ahead as planned.