Regarding the last point, it's normally not very acceptable to bring your own beer to a resteraunt. Wine is all fine, but the majority of establishments in larger cities will flat-out refuse to let you bring either beer, premixed drinks or spirits with you. It's a sign of disrespect, or being a "bogan". Wine = Yes, but beer is very No.
DO indicate that you are full by putting your knife and fork parallel on your plate with the utensil handles facing right.
DO bring your own beer at a restaurant. This is often shorted to BYOG, or bring your own grog. Except for more upscale restaurants, bringing your own beer is acceptable and cheaper. You will likely just have to pay a corking fee.
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