Very strange crossword this one - I struggled a lot with it!!
1d PUBS.
Pubs (Public Houses) often referred to as 'watering holes'.
Abbreviation 'PH' occurs in orphan & elephant.
That was my last one too -- as you say, Mamya, obviously Pubs, but I had to go to FifteenSquared to find out why. Most of them were outraged by the Spongebob Squarepants theme!