Most importantly I love GCH and would give up PPH Club Level to stay there. You can also check out WOC from the 6th floor balcony there if you're there on a night you aren't in the parks. Just my opinion - we ALWAYS stay at GCH and love the convenience of leaving mid-day to swim or nap and walk right back in. It truly feels like being IN the park.
1. You have a set WOC Menu to choose from - our favorite is Carthay Circle and though it doesn't include my favorite biscuits - we just order them on the side. They should have the updated menu here
http://allears.net/dlr/din/menu/men_carthaydw.htm
2. There are specific areas to watch WOC for each restaurant. I prefer the CC area but some like the Wine Country area. I've never stood there
3. I usually show up 15mins before the show. Some people may argue that but I have never had an issue. I'm also only 5' Tall and have a 4yr old and we always been able to see in the probably 10 times we have seen it (she wasn't always 4yrs old

)
4. You can ask nicely and they will let you choose the later show. I've never been denied the show I chose.
Hope that helps...Enjoy!!