I've seen many historic photographs of the Goblin Ha' but this one is completely new to me.
An educated guess would put the date in the mid 1920's but I'll happily be corrected on that.

Note the hanging "RAC" & "BP" signs which are probably enamel on metal.
The petrol pump appears to be for "Shell" but clarity suffers when that section of the picture is magnified.
These petrol pumps had a glass advertising globe on the top which was illuminated at night.

At first I thought  the machine beside the door to the bar was an early type of compressed air pump,
but on closer inspection it appears to be a weighing machine!

I think there was a Goblin Ha' bus service to Haddington Railway Station as it was quicker to get the
Edinburgh train from there, rather than Gifford.

Was the Garage purely to service the bus, and hotel residents cars, or did it also
serve passing motorists & those from the village?