I'm planning a day trip to Cardiff for Dec 28. I don't have train times yet of course, but right now I'm planning for the 10AM Dr Who experience followed by the Brit Movie Tours bus tour (which I've already booked) for 12:30. Obviously, we'd like to get in to the Experience as close to 10AM as possible. Looking at train schedules right now (for Sat 30 Nov), it looks like the earliest we'd be able to get into Cardiff Central on a Sat is around 9:45, then taking the Baycar bus we'd probably get to the Experience between 10 and 10:15.
Is there generally a wait to get in? If we have to be there earlier, the only option I can see would be to take a train the night before and spend the night in Cardiff, but as our hotel in London is already booked, that would mean paying for 2 hotels, which I'd rather not do. Also, we only arrive in London on the 27th, so I don't really want to head right out for somewhere else the same day.
Thanks for any advice.