Sanctuary of truth - Just turn up!

Though do check out the different prices - If you dont like bumpy seas cut out the boat trip and save a few hundred. You can choose from about 6 different price options if i recall.

Cake - Do you know Nitras little restaurant opposite where Icon Boutique hotel used to be? She will order you a nice cake and have it delivered fresh a couple of hours before your party. various designs and sizes available.

Whiskey - i would get it from the bar you want to stay longest in. They do charge for mixers if you bring your own ( if allowed) and it actually can work out more expensive.