if there was lots of kneeling it probably wasn't a sunday.
orthodox services are supposed to have lots of kneeling, sunday (and usually saturday) is the exception.
one is 'supposed to' often go to services that are not on sunday. with modern work patterns etc. most people these days go mainly on sunday, so maybe u didn't see so much kneeling before if you only went on sunday, this seems to be the habit of many orthodox people (i too can't often go on other days).
in many oriental orthodox churches, the 'no kneeling/prostrating on sundays' rule has been allowed to slip, it's not unusual for people in those churches to kneel, especially in the eritrean church i have been to, where literally no-one enters church without a full head to the ground ('bottoms up') prostration 3 times.
i try to do a half-way thing (i love to kneel) and bow without actually touching my head to the ground in a full prostration. the proper action for people like me to take, though is to go to church more often on weekdays, where you can kneel and prostrate to your heart's content!
by the way, no prostrating after easter for the 50 days until the ascension! prostrating starts again during the apostles' fast.
by the way (2) i suppose you also do huge numbers of prostrations on good friday, in the coptic church we do loads, of course i love that part