All in all, I really could care less if someone has a honeymoon registry, but I think they're rude if they get upset at receiving something other than cash/a GC.
I think everyone agrees that a HC would be rude to express being upset. I also think a gift giver would be rude to express disgust at a HC asking for what they want on their registry, or to express being upset that their non-registry gift is not appreciated. It seems rather judgy to expect anyone else to share your (general) opinions on what wedding gifts should be given or more appreciated. For me, I had such a small wedding that I didn't register, but if I were to register or ask for gifts it certainly would not be flatwear or platters. It would be skydiving or cavediving or a jungle safari.
Well, I don't just mean expressing disapproval to the actual gift giver, I also meant the general sentiment here, as well. The OP explicitly said she wanted to give a tangible gift, yet all the comments seem to be insisting anything other than a check or GC is inappropriate. I just disagree.
And, yeah, no one said that you had to ask for a platter, but there is an in between, here. Neither of the gifts you mentioned are tangible, and some people just prefer to give tangible gifts. REI offers registries, and plenty of other stores offer things like board games, luggage, whatever kind of tangible items a couple might make use of. Not everyone wants a kitchen aid, that's fine.
I personally give checks or GCs, that's what I prefer as a gift, too, but some people just don't feel comfortable giving that, for whatever reason. I think it's only fair to offer gift givers a middle ground. My grandma really likes giving people china, but I don't want any china, so I didn't register for it. She didn't insist on getting me china, even though I know that's her gifting preference, but she did want to buy me something tangible, so she chose something off my registry that I could actually use. It's not always about buying a platter for someone who doesn't want one, it's about wanting to give a tangible gift versus an experience gift.
Finally, I don't think registries or lack thereof are a summons for a guest. A gift giver can give whatever they'd like, but they might want a few clues as to the recipient's preferences. I just think you're less likely to be disappointed if you give the gift giver a few options or ideas, rather than dig your heels in and find nothing other than an experience acceptable.
Also, I don't really understand the comments about being able to buy your own home goods...surely the same can be said about your experiences?