Congratulations! I was recently thinking about you and here you are!
5 weeks - how awesome...it's amazing how very full our lives get when living in recovery.
Sounds like you handled the 'trigger' time of day very well with acknowledging the trigger and substituting it with other beverages.
As for being offered a drink: I've always been a proponent of informing those only "with a need to know" about my alcoholism. It just conjurs up too many potential issues.
My advice...keep it simple, be direct and don't leave any pause time for anyone to ask 'why.'
Here's a link that has some ideas on how to do what you've asking about.
How to Turn Down a Drink: 11 steps (with video) - wikiHow
You are truly living up to your forum name - I'm so happy for you. Take care.