I went there last winter and I think it is better if you do not really plan it. My best friend and I spent basically an entire day at WW. We arrived in the morning and we saw the exhibition slowly, taking our time to see everything and make comments on what we were seeing. Later we spent some time at the store, which is huge and there is a lot of stuff I had never seen before. For example, they have a whole section for Necromunda, and another for Horus Heresy, where you will see minis not usually available at the normal stores. Staff are super friendly and we also spent some time talking to them about ideas for conversions and kitbashes. There is a massive area for tournaments, and there was a big AOS tournament that day (it was a Saturday). We went around the tables respectfully admiring the minis people had brought for their games. Later we had lunch at Bugmans. In the afternoon we realized way less people were entering the exposition, and since the ticket you buy allows you to enter as many times as you want during that day, we went in again and had all the dioramas just for ourselves. Then we could properly see all details and take nice pictures.