（1）She has to say she wishes the situation were/was a little better.

wish后接宾语从句，表示与事实相反或不大可能实现的愿望，所以宾语从句必须用虚拟语气。当谓语含有be时，部分人称一律用were为正式语体。单数一、三人称主语用was为非正式语体。本句可以用was.

（2）He ordered them to get out of the store or he would had them all arrested.

情态动词永远后接不带to的不定式。所以would had为错误。你应该知道这是错误的。不该就此提问！！！。

是的，这里would do为过去将来时。如果or前面为祈使句，则后面用will do. 例如：

Get out of the store or I will have you all arrested.