If you are going when park hours are short - say 10AM-8PM - and when weather is cooler, it is not that big a deal. Crowds will be less and one can spend 10 hours at the parks for all hours it is open and it is not that hard.
If you go when park hours are longer and/or it is warmer, and when it is more crowded, then it can make a huge difference. Many folks around here understand the huge advantage you get by arriving to the parks before they open and getting an early start.
What happens when you stay at a close walking distance hotel - 5-10 minutes away - of which there are probably 15 choices - is you can squeeze in more sleep and still hit rope drop. Wake up by 6:30-7:00, get some quick showers, grab a bagel and be standing at the park gates at 7:30 AM for an 8AM opening.
What happens when you stay father away and drive in is that you need to wake up 30-45 minutes earlier to make rope drop. That means before 5:45-6:30AM. So what often happens is that folks just can't wake up that early and they end up arriving at the parks by 8:30-9:00AM. Missing those first 30-60 minutes makes a sharp difference in what can be experienced that day.
Further, since the hotel is so far away relatively speaking, it is too much of a hassle to go back for a nap for many guests. So folks don't. They stay through the most crowded part of the day and are tired and ready to go back to the hotel by 7PM. So they call it quits. Or they stay late in the evening and get really, really tired. And can't make it up early the next morning.
If they do decide to take an afternoon break and get a nap, they can easily spend 90+ minutes in transit round trip. This means a shorter afternoon break than those who stay at a closer hotel.
Over a 3-5 day trip this time adds up. Many folks just don't care that much and think saving time is not that important and getting to the gates early each morning is not that important. Those folks are often the same ones waiting in 60+ minute lines midday for the big rides and getting on the DLR average of 10 rides per day. Those who stay closer and walk and get to the gates early and take afternoon breaks can maximize their day and ride 20-30 rides per day pretty easily.
For us personally we rarely wait for any ride more than 20 minutes and get 20-30 rides per day without rushing.
To us it is absolutely worth it to stay at a closer hotel to DLR because we almost always go during summer high season. I would rather stay at a lower quality hotel and be closer than a higher quality and be further away. When we are at DLR we are not there for the hotel. We are there for the parks. We just need comfortable beds and a quiet place to sleep.
Hope that helps!
