To enumerate the covenants you made in the temple, here is the a quote from a public speech:
so according to Benson's words:Ezra Taft Benson, BYU Devotional, 12 April 1977, wrote:Celestial laws, embodied in certain ordinances belonging to the Church of Jesus Christ, are complied with by voluntary covenants. The laws are spiritual. Thus, our Father in Heaven has ordained certain holy sanctuaries, called temples, in which these laws may be fully explained, the laws include the law of obedience and sacrifice, the law of the gospel, the law of chastity, and the law of consecration. full talk here
1. Law of obedience and sacrifice
2. Law of the gospel
3. Law of chastity
4. Law of consecration
In addition, the question asks, "Do you wear the garment both night and day as instructed in the endowment and in accordance with the covenant you made in the temple?"
The instructions in the temple are simply to wear the garment throughout your life. Specific logistical details as to how often or when it is to be worn are not provided in the temple. While "throughout your life" is interpreted (note passive voice) as being day and night, such instructions are not explicitly given in the words of the temple ceremonies. The 'covenant' of the garment, the two-way promise is that if you wear it throughout your life, and do not defile it, it will be a shield and protection to you.
'do not defile it' is often thought of as treating the garment like a flag: never let it touch the floor, etc., etc. I think whoever put these words out had something else in mind.
''shield and protection' -- the folklore is around 'magic underwear' -- lots of faith-promoting stories around miraculous saving from bullets, etc. This isn't a real benefit -- but be that as it may.
The garment, to me, is a inward symbol of the temple covenants. Such symbols are common in other religions: sikhs and jews wear sacred underwear of some sort. It's a symbol of commitment. How and when I wear that symbol is entirely up to me, imo.
My answer to the question is "Yes" to all points.