Presumably you are talking about an unchaperoned holiday. That is, that you will not be part of a group with parents or friends.
In this case, three things have to be carefully weighed. Firstly, our personal testimony before the world. Titus 2:1-8 commands believers to walk carefully "that the Word of God may not be blasphemed" or mocked by those who do not know the Lord and "In all things showing yourself to be a pattern (example) of good works ... that one who is an opponent (unbeliever) may be ashamed, having nothing evil to say of you". That is why it is so important to avoid even the “appearance of evil”. 1 Thess 5:22. An eternal soul watching may be turned away from the Lord by what he perceives to be hypocrisy.
Secondly, our testimony before fellow-believers. Again, we are to "be an example to the believers in word, in conduct, in love, in spirit, in faith, in purity ..." 1 Tim 4:12. If our brother is grieved because of the way we behave, then Rom 14:14-23 tells us that "we are not walking in love" and could be responsible for destroying someone for whom Christ died. A weaker believer may be encouraged to do the same thing… with disastrous results. "It is good neither to eat meat nor drink wine nor do anything by which your brother stumbles or is offended or is made weak" (v.23).
Thirdly, we need to heed the words of 1 Cor 10:12 "Therefore let him who thinks he stands take heed lest he fall." The human heart is "deceitful above all things and desperately wicked." (Jer 17:9) and deliberately placing ourselves in the way of temptation could prove a snare... as many a believer has found to their cost.