Keep it, just make sure they'll let you "check in" Thursday morning. It'll be nice to drop your bags in your room instead of leaving them with the front desk. Plus you can grab a quick nap or change or shower before heading out. When I went to Australia, we landed in the morning, I think around 9am, and couldn't check in till after 3pm. Was stuck wearing the clothes we had on while walking around Sydney, wishing we could just grab a nap and shower.