After the first couple of weekends, you will realise that there is no worse place to be than Cardiff city centre at 2pm on Saturday or Sunday. The exception is match day, when the whole of Cardiff becomes a ghost town. This is the best time to get any shopping you need done. Just don't expect any help from any of the shop assistants, all of whom would much rather be watching the match then helping you find a pair of boots in your size, and are too busy checking the live updates on their phone anyway.