@GamersBride: Alright, you did ask, so if this comes out sounding as though I am from another planet it is not my fault. Though in that case you have my sympathy: I spend a lot of time feeling as though I am on another planet.
The proper thing to do, is to set up a gracious household with all the beautiful heirloom-quality accoutrements needed to entertain friends and family to dinners, teas, and homestays over the coming sixty-odd years of marriage that lie before you. Of course, you would properly have started this in your teens or even pre-teens, when you chose your china, silver and crystal patterns, since heirloom-quality tablewares take years to collect and you want to have enough to sit down at least a small dinner-party (to whit, six table-settings for three courses) by the time you have your own home. Reputable department-stores help you keep track of your patterns an what pieces you have collected, and let you know when your pattern goes on sale or — sadly — gets discontinued and you have only fourteen months to complete your collection.
Once you are married you need to anticipate future christenings, thanksgivings, bar and bat mitzvahs, Christmas Dinners and so on, and you will need more than six place-settings, plus also damask table-linens and serving pieces and good egyptian-cotton bedlinens. You’ll have to continue collecting for a while, so it is a good time to plan your future style, and decide whether you want to put a thousand dollars a year aside to eventually acquire that sterling silver tea-service in only twenty-five or thirty years.Your registry reflects your plans; and as long as you do not tell anyone about it no-one else has any business commenting on what you choose to put on it. To do so would reveal that they have been snooping into your private affairs (which of course we are love to do, but discreetly with the help of the department-store china salesclerk.) So go ahead: put what you like on it, add things, remove things, put twenty-five-thousand-dollar tea services on it, whatever you like, it matters not at all how many guests you have or whether you feel entitled to gifts from them or not.
But no need to register for laundrey-hampers: everyone needs those and they are relatively cheap. Responsible adults just go out and buy such a thing if they need it. It is not the kind of thing you plan to collect over the years! Of course, setting up housekeeping involves many such small expenses on generic consumables, and the small expenses build up — but that is what showers are for. Since presents are de rigueur at a shower and the presents are opened in public, and since a gracious lady would quail at the thought of “showing up” the other guests by giving an ostentatious gift, shower gifts are supposed to be relatively low-cost and showcase the giver’s personal good taste and cleverness rather the depth of her pocketbook, a proper shower guest will give something inexpensive and clever that doesn’t have to match anything — like a laundry hamper. Registering for such things removes the scope for cleverness and ruins the fun of a shower.
Which is largely what weddingmaven said, but much wordier.