Act standby test international

<p>So i'm taking a standby request test for my act test this december and it's totally nervewracking since i'm taking the standby test. Does it guarantee if the international test center has a spare seat for standby test takers even if I come the earliest? Moreover, i'm taking it in another town which means I should buy plane ticket and accommodations. Looking forward to hearing your experiences. Please help.
Test center: jakarta,indonesia</p>