Rookie questions about feeding and vegetable suet

Hi, I've a pack and a half of leftover vegetarian suet - is it okay to use to make fat cake for birds? Can I also add some dried fruit, sesame seeds and hemp seeds (clearing out the pantry cupboard)

Old advice on the forums seems to be that veg suet is ok, but the website suggests vegetable fat should be avoided - so is it best to just bin It?

also Is it ok to leave suet cakes and logs out for a couple of weeks if they show no signs of mould and the ground s clean underneath - I've a shop bought log which, now it s out of reach of the squirrels (so far) is only slowly being eaten, and bought balls are currently being ignored completely.