Any Citi card that earns TYP can be used to purchase DLR tix directly thru Citi (actually Cx Travel does it for Citi) but as they are 1 cent per point now, you could get the same value as using Chase UR and cashback. I'm not sure what you mean by using the points by purchasing thru
travel agent, TYP are worth the same as cashback or thru Citi travel portal.
I found the Marriott properties hard to book, especially the Fairfield Anaheim. We stayed at Camelot Inn our first stay. Not luxurious by any means but it was fine. No fancy pool. Honestly after being in the parks all day, the shorter the walk to the hotel, the better. Visiting this summer and booked the Best Western thru Chase portal with UR. Even shorter walk from parks. If you won't spend much time at the hotel, go for close proximity. If you'll use the pool daily and spend time in the hotel, go for amenities.