Here is the thing about Sexual activities....
We do not admire it like the western culture,But the eight fold path is not a hammer on your marriage life.You can still have sex but with her only.
And if you are single there is a set of guidelines established din Buddhism in finding the correct type for sex (Please refer a good source about Five precepts).
You can very well feel anything without getting attached to it,
How do i know it?
well arahants still felt the heat,coldness,soft touch of clothes,the comfort of a breezing wind,the beauty of a jungle.But still they had no disturbance from it they even admired the beauty of nature.
But in the examples you are presenting in your question we can't agree that it can be felt without the addiction to it. Basically the main reason for sex is the attachment that you have for it.
Sex is not a huge deal for a beginner but alcohol is an addiction with no virtual benefit,it is that simple and under n o circumstances can be justified as something a Buddhist would do. You can have some help from meditation to fight the urge to drink and some therapy or rehab would also help.that is something you will have to fight on your own.
Remember what Lord Buddha said
This is an individual's fight against himself,in it he will need good friends,Knowledge of dharma and courage.But he must fight alone.
Well we are here to help so start with one day without alcohol and let's see what happens from there.