Talks between the leaders on June 12 are expected to centre on ending the North's nuclear weapons and missiles programmes in return for diplomatic and economic incentives.
Trump's remarks came two days after he said he didn't need to do a lot of preparation ahead of the historic summit because the interpersonal relationship between the two leaders would be the more important factor.
"But It depends on what they're talking about it and it depends on their willingness to take time and work around the periphery and ultimately to get to the really hard cards in the pack; human rights and nuclear weapons".
The road to the summit has been bumpy, with Trump pulling out of the summit last month after aggressive language from Hermit Kingdom. "We're going in with a very positive spirit".
Each year, talented North Korean refugees living in South Korea vie for a scholarship to study English as part of 22-week intensive course run by the University of Technology Sydney. Media said Trump was likely to arrive at the Paya Lebar air base, where previous USA presidents landed on visits to Singapore.
He previously also made an appearance at the Winter Olympics in Gangneung in South Korea in February, bewildering North Korean cheerleaders who initially thought their leader had walked into a hockey stadium. But classmates of the future president said that while there, he got a firsthand taste of the terrors of the atomic age. It could also give North Korea the opportunity to demand the withdrawal of US troops in the South or the halt of regular allied military exercises.
Every issue will be on the table in meeting with Kim Jong Un, US president says.
Mr. Trump and his classmates listened to the radio as President John F. Kennedy warned Khrushchev of American action if he did not pull back. "I think that Chairman Kim Jong Un is prepared to do that as well", he said.
The one thing it is impossible for North Koreans to understand, however, is how big the difference in prosperity is between their country and developed nations like the US and South Korea.
"They (searched) my bags and then told me that this is a very sensitive time to be in Singapore and that I should stay away from the Sentosa Island as well as the Shangri-La hotel in town", he said in a Facebook post.
Agreeing to a troop withdrawal from South Korea would be the worst possible outcome for the summit, said Christopher Hill, a former US ambassador who ran negotiations with North Korea in the George W. Bush administration.
But because the realization of a US-North Korea meeting has been so unexpected, unprecedented, and personalized, it will provide a unique opportunity for both sides to test their assumptions about the intentions and motivations of the other.
Congress could either help give the negotiated agreement more heft by ratifying it, or completely undermine the deal for either political or substantive reasons, Town said.
Beijing wants the summit, says Yun Sun, director of the China program at the Stimson Centre, relieved for any de-escalation in tension. A Nobel Peace Prize for Trump may also be on the line.
According to the United States president, who earlier this week said that he "didn't have to prepare very much" for the meeting other than ready himself to "get things done", much will hinge on Kim's character and openness to genuine negotiation.