You can use the search function to look for "alcohol" and "drunk" in the rulebooks.

Counter Magic works on magic. Gnomish devices are not magic.

It is the maximum size.

Contact Alchemy is listed under Attack Types.

In order to cast a spell, you must still have had access to that spell's scroll when re-memorising, even if the slot is versatile.

The Claws spell stacks with the Claws spell. Savar'Avings' natural claws are not the Claws spell, so they do not stack.

I don't see why not - but it will still need to meet the volume requirements, so it can't just be a bag that could hold that volume. It must remain at...

Oh you crazy kids these days. Sure, that works.

Yep, that works.

Please quote the relevant rule.

The avoidance is part of the fear effect. If the fear effect is avoided, the avoidance is avoided. Well that was a sentence.

That is an exception.

The first option is correct. The costs are multiplicative, not additive.

This is a mistake and will be rectified in the upcoming 2019 edition of the rulebook. Please ignore it.