Drinking a potion of healing is a bonus action. Administering it to someone else is an action.
Or you can use an action to drink it, and it restores the max roll (ie: 2d4+4 -> 12)

Flanking is +2 to hit, instead of advantage. Like reverse-cover.

Can small instances handle the traffic that Threads will be generating? I imagine small instances may get overwhelmed by bandwidth / cpu constraints, due to not having the budget that Meta has. Smaller instances that get bogged down might find people migrating to Threads simply because it will be able to handle the load.