Oh dear, I must remember to bring my own drink next time as fountains are out of order for obvious reasons…
My tip for running on snow and ice without falling over:
Firstly wear your trail running shoes!
Secondly, you won’t slip on icy surfaces if you pull a pair of old socks over your shoes. The socks may not last very long, probably just one or two runs, so make sure to take a pair that you’ve been wanting to get rid of for a while.