It wasn't bad. You go out of the front of the hotel and head twords Harbor. As you get to the corner of the hotel, there is a side road that goes to Katella. that is 1 city block. From there you make a right and go to harbor and Katella, the distance of the new hotel (Sheraton I think) they are building there. Then you have your long city block from Katella to the bus entrance. After that light is about a half city block to the entrance to the walkway between the 2 parks, the security check, then the ticket entrance.
With my 4 year old and I, it took us less than 15 minutes to walk it, although I carried her between Katella and the bus entrance.
Going back we did the same walk, which is more tiring after a long day in the parks.
ALSO!, The hotel will flag a taxi for you if you want. on the way to the park, the taxi actually has to pass the entrance and turn around to go to the drop off point. On the return, the taxi wouldn't let us out until we were at the front door. beware on the return, there is a security line and only 1 car is allowed through at a time, so there could be a wait. On most occasions it was about 10 bucks to take a taxi. There was one occasion where, when at the hotel, we were going to have to wait about 10 minutes to get through the car security line, so we just got out at the curb. the taxi driver was none to pleased with us, be we tossed him a 10 and saved 3 bucks of just sitting and waiting.