Have things really changed that much recently in Euro Traveller? Last time I flew with them in August from LGW-BCN, they did a bar round and I asked for (and got) a beer and a glass of water... maybe they just liked my face...
Then they did tea after 'all day deli' and I had 2 cups of tea - no questions asked. In any case if a pot of tea is made I can't really see them turning down somebody's request for tea because they've already had juice and then throwing away half a pot down the sink... a pot of tea costs pennies to make anyway!
By the way, does anybody take their own flasks of tea on no service carriers or is this not allowed on the grounds that you could disable a cabin crew member by scalding them with it?