I have just read this thread and it really facinates me. You see baby no1 was born at 27 weeks and therefore spent the first 14 weeks of her life in hospital. This meant when she came home she already had quite a strict routine (feeding exactly every 4 hrs) and it was really quite easy. However with her she often had to be reminded to eat, otherwise she never really got hungry. I would also say due to her size she was also waking once at nigt for a feed until 13 months old (she was only 15lbs at this point, so she still needed it).
With baby no2 I had read GF book and liked the idea of getting into a routine early on, so although I didn't do half the things the book talked about I did do a morning nap, around the same time each day, 2 hrs after lunch and an afternoon nap. This fitted in perfectly with the older one since she still has an afternoon nap (she's 2.5 now). I accept some of the baby's naps are in the car seat, and not in bed, but I do try really hard to have lunch around 1 and naps from 1.30 - 3.30pm. 6 months on things seem to working great. So I can only say to all those who critise GF's routines, bear in mind it is only advice, it really helps to know how much a baby needs to sleep and most of us do have a brain and use the book to BASE a routine on, we don't necessarily follow it to the letter. For others they do follow the book to the letter and it works for them, for yet more they use insinct. However I am glad that I read a book that gave me the courage of my convictions not to feed on demand, and to get a routine established quickly with no2 because I had more time and energy to play with my toddler who knew she would get one to one attention once I'd fed the baby. I cannot critise people who feed on demand, that may suit them, but it wasn't practical for me to be feeding every hour or two. Also with people I know who fed on demand, and went with the baby's routine, all of them gave up bf much earlier than me, and started weaning more quickly because they were so knackered without sleep and having a baby seemingly permanantly attatched to their boob. They also didn't have another one to cope with.
I think after all this waffle I sit somewhere in the middle. GF gives a fantastic guide to how much sleep babies need, and how to get a routine going. Then I think it is up to the individual. If you are one the second child I can only recommend a routine is established as quick as poss, since you then seem to be able to fit much more into the day. All in all it depends on the child however, some are fractious little beasts and some are placid, routine or not.
No help in finding activities which fit into GF's routines, but I like to think that you can use her advice as a guide, not as a rule.