There are parts of Game of Thrones that drag, painfully detailed descriptions of meals, I'm look at you. But it's not like the middle WoT books where the vast majority of the books are bogged down.
As for if WoT is worth reading, that I think is a personal decision and the only way you'll know for sure is reading the books. I thought the ending was good, even if bits of it were pretty obvious. But I'm not sure if that ending was worth waiting half my life for. Maybe I'd feel different if I had started reading the series after all the books were published.