Make the shop offline but still display products?

hello..
i want to ask, is it possible to disable shopping cart and check out system temporary?

making the shop still online, people can look at the products page and catalog, vote and review and compare products but cannot order the product?

does disabling "add to cart" button is enough?

putting the store offline will disable all feature including the catalog and products..

another question is, is there any modules/plugin that shows highest rated product in the shop?
a simple list of maybe top 3 of highest rated product in store so i can display it on front page?
Can be done through modules using product_average_score as sorting

how to make it [the module] to display all products instead of only certain products in category?
do i need to create a new category "All products" and include all products in it? or is there any other way to display all products?

also is it possible to show rating/votes in the module but disable voting using it?
[the module only show the rating of the product, to vote user needs to login and go into the product page, not through the module]

thanks in advance..