Welcome to Open to Export!
There is a wealth of free content available online to help you make the right and informed decision for your business / customers when it comes to exporting alcohol.
Alcohol is subject to additional controls as it is subject to excise duties, even when moved around the EU. You may be able to access the Excise Management Control System (EMCS) through your freight forwarder, which will enable your excise goods to move around the European Community with only the consignee accountable for excise/duty.
If all of this seems a little daunting, just find a reliable forwarder/agent who can undertake all the necessary actions on your behalf (although you will pay an additional fee for this).
Here are a few of my bookmarks I refer to for guidance:
Alchol Duty, levy & taxation:
Storing/Warehousing excise goods
Export regulations for alcohol:
BExA Guide to Export Compliance: (Page 25 is a must read!)
Finally my personal favourite, Alcohol Labelling Requirements country by country:
I hope this helps and good luck!