first come, first served

[yeamaozi]

1. "The registration of members will be on first come, first served basis subject to availability of seat."2. The main criterias are as follows...Is the above sentences proper?

[Ouisch]

1. "The registration of members will be on first come, first served basis subject to availability of seat."

The registration of members will be on a first come, first served basis, subject to seating availability.

2. The main criterias are as follows...Is the above sentences proper?

The main criteria are as follows ... Are the above sentences proper?

[yeamaozi]

Thanks for your feedback, is criteria itself is plural?

[David L.]

Thanks for your feedback, is criteria itself is plural?

Thanks for your feedback. Is 'criteria' plural?

Yes: one criterion, two criteria

[tedtmc]

The registration of members will be on first come, first served basis

Would it be better to write it this way?

The registration of members will be on a first-come-first-served basis.

Hyphenated since the phrase acts as an adjective?

[David L.]

It is usual to write it as 'first come, first served'

[tedtmc]

OK, I have just checked and found that, used as an adjective, the words are hyphenated in pairs with the comma retained as in the idiom.

Parking Spaces on a First-Come, First-Served Basis - Los Angeles Times

iPhone to be sold on first-come, first-served basis