Validity of nikaah if spouses don't perform salaah

Q: If a man and woman love each other but don't engage in haraam, both are Muslim, believe in Allah Ta'ala, the prophets, Quraan as Allah's book etc. but don't pray BUT know it is obligatory, will their nikaah be valid? Will their nikaah be void?

As I have heard that such couples nikaah is not valid if they don't pray before marriage, don't pray up until marriage and after marriage.

Being eligible for zakaat

Q: I am zakaat liable and collect zakaat from time to time from people, however this month I collected a large sum. Can I take out money for my kids Madrasah fees, transport fees and whatever I wish to pay for in the future and keep it aside so on a monthly basis I will have enough to pay for my expenses?

Example, I take out R1200 and keep it aside for fees from April till July so when I get my salary I can use that for other things I require.

Will I still be able to collect zakaat after this?