It's also important to keep in mind that Disney doesn't operate in a vacuum. Politics seep into the parks, whether they want them or not. I highly recommend doing some reading about the day when the Yippies "invaded"
Disneyland. Plus, being a major American corporation, Disney has certain interests that intrinsically get politics involved (for example, they are one of Florida's chief lobbyers; at a federal level, I also foresee them getting involved in copyright/public domain legislation within the next year or two), so the idea that Disney and politics cannot or will not touch is just unrealistic.
That said, I agree with the majority in this thread that Disney at least needs to offer him the opportunity to speak (also, Disney knows that the slight majority of its guest makeup is conservative, so there really want to be careful), but I also think people are well within their rights not to visit the refurbished attraction if they so choose. I don't think it's disrespectful to the office; it's their vacation and they have every right to spend it in the way they chose. Fact of the matter is he said some things that really hurt or bothered some people, and I think it's important to take everyone's feelings into consideration. For those that voted for him, they'll want to see him speaking there. For those that felt hurt by what he said, they'll obviously avoid it. Both are reasonable and equally as patriotic if you ask me.
Personally, I haven't visited in a while and probably won't visit for the foreseeable future. As someone who has been mocked as both an adult and child for his disability, I don't think I'll be anymore motivated to visit with him featured there (I'm not arguing about this, so please don't waste your time; trying to keep politics to a minimum), but the larger reason why I haven't been visiting lately is for another entirely different reason: the audience. I just think people seem to lack common respect and decency these days. Many times, I've heard folks yell something nasty at one of the figures. They've done it to Bill Clinton. They've done it to George W. Bush. They've done it to Barack Obama (in some cases, yelling words that don't belong anywhere in a civilized society, let alone a Disney theme park). If you honestly feel like you're not going to be able to sit through the show quietly and politely, then don't go (like I said, you have every right not to), but don't disrupt others' experiences. It seems people are increasingly incapable of a respectful dialogue on both sides.
In fact, this petition seems to be illustrating this point perfectly. Look at the comments for the DIS article. You've got one side (who usually prides themselves on being accepting and inclusive) making generalizations about anyone who voted for the guy, and then you've got the other side responding by calling them all snowflakes and crybabies. It's embarrassing and it's obivously not exclusive to the DIS. It's playing out all over social media and television, and it makes me embarrased for my country. Hopefully that didn't get too political.