Posting here as well…
The invite code for the Grand National group is DAF6A6D6
Feel free to jump in ahead of Saturday, we should have a small mix of players in there.
The TRF group will still be running as well, so you can play in one or both depending how you fancy it.
If you do join both, you can switch between groups easily on the day (tap the group name top left, once you are in multiple groups).