I've only been when we played them, so based on one visit.
1) I got drenched as the roof didn't cover all rows of the seating
2) The concourse got really slippy with all the rain, which made it like an ice ring
3) The stupid, no bags allowed, rule meant my mate missed the game as he didn't fancy leaving his work laptop in the school opposite
4) They ran out of Neck oil or gamma ray (whichever one they sell) before kick off
I text my Spurs ST holding mate about the first two when he asked whether I thought the ground was amazing, I said no and explained why and his response was "yeah but that only happens when it rains" which you would have thought they would have thought about when building a ground in North London !