The info below pertains to the 3 ships with a lounge.
If you are sailing concierge, there are two happy hours: one before each dinner seating. The happy hours include complimentary beer, wine, and cocktails. I did not see smoothies, but I wasn't looking. There are also happy hours on embarkation and at the character meet & greet or other special events.
Whenever the lounge is open, there are small plates, canned soda, coffee, tea, and bottled water.
Occasionally, additional treats are delivered to the staterooms.