This yes, long holiday parents tend to spend time to experience the park!

For 2 day pass, yes can do in 2 days

Yes they have a locker area to store luggage

The theme park should require one whole day of fun and excitement. The Sealife experience requires approximately 30 minutes to 1 hour. I would suggest to puchase the 1-Day Double Pass that includes both Theme Park and Sealife. Enter the theme park first (opens at 10am), have a good time and lunch there. Once you are done, exit the theme park and enter the Sealife which is right outside. Mind you, 1-Day pass does not allow re-entry to the theme park so be sure to save the Sealife for last. As to accommodation, can search around Medini or Puteri Harbour. Most in the area are apartments big enough for a family.

Suggest you look up apps like Klook to get family package deals or check if there's package with hotel stay as well. Otherwise may be quite costly for one day trip. Considering the current situation with low tourism you may go to Legoland website to see if there's new deals available. Hope this helps.

Tickets do have pricing, kindly check their website for latest. Or let us know if any other pricing you are looking for. Cheers

The respective Legoland management should be able to advise you.

You should probably check it out at their site or on other travel sites to get good deals