If you have 2-3 hours to spend in Irvine, there are several things you can do:
1. Visit the Scottish Maritime Museum: Take a tour of the museum and learn about the rich history of Scotland's maritime industry. Time required: 1-1.5 hours.
2. Explore the Irvine Beach Park: Take a walk on the beach or have a picnic in the park overlooking the sea. Time required: 1-1.5 hours.
3. Visit the Vennel Gallery: Check out the art gallery and admire the works of local artists. Time required: 30 minutes to 1 hour.
4. Stroll through the town centre: Walk around the town and indulge in some shopping or grab a bite to eat at one of the many cafes and restaurants. Time required: 30 minutes to 1 hour.