The rules are even more strict for foreign visitors, so even if you see a local in shorts it's not OK for everyone.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	Discourse=elaboration-additional:80->78:1|Entity=(95-abstract-new-cf4-2-sgl
2	rules	rule	NOUN	NNS	Number=Plur	6	nsubj	6:nsubj	Entity=95)
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	cop	6:cop	_
4	even	even	ADV	RB	_	6	advmod	6:advmod	_
5	more	more	ADV	RBR	Degree=Cmp	6	advmod	6:advmod	_
6	strict	strict	ADJ	JJ	Degree=Pos	0	root	0:root	_
7	for	for	ADP	IN	_	9	case	9:case	_
8	foreign	foreign	ADJ	JJ	Degree=Pos	9	amod	9:amod	Entity=(3-person-giv:inact-cf3-2-coref
9	visitors	visitor	NOUN	NNS	Number=Plur	6	obl	6:obl:for	Entity=3)|SpaceAfter=No
10	,	,	PUNCT	,	_	23	punct	23:punct	_
11	so	so	ADV	RB	_	23	advmod	23:advmod	Discourse=causal-result:81->80:0
12	even	even	ADV	RB	_	15	advmod	15:advmod	Discourse=contingency-condition:82->83:0
13	if	if	SCONJ	IN	_	15	mark	15:mark	_
14	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	15	nsubj	15:nsubj	Entity=(91-person-giv:inact-cf2-1-ana)
15	see	see	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	23	advcl	23:advcl:if	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	17:det	Entity=(96-person-new-cf5-2-sgl
17	local	local	ADJ	JJ	Degree=Pos	15	obj	15:obj	_
18	in	in	ADP	IN	_	19	case	19:case	_
19	shorts	short	NOUN	NNS	Number=Plur	17	nmod	17:nmod:in	Entity=(50-object-giv:act-cf1*-1-coref)96)
20-21	it's	_	_	_	_	_	_	_	_
20	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	23	nsubj	23:nsubj	Discourse=same-unit_m:83->81:0|Entity=(50-object-giv:act-cf1*-1-ana)
21	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	23	cop	23:cop	_
22	not	not	PART	RB	Polarity=Neg	23	advmod	23:advmod	_
23	OK	OK	ADJ	JJ	Abbr=Yes|Degree=Pos	6	parataxis	6:parataxis	_
24	for	for	ADP	IN	_	25	case	25:case	_
25	everyone	everyone	PRON	NN	Number=Sing|PronType=Tot	23	obl	23:obl:for	SpaceAfter=No
26	.	.	PUNCT	.	_	6	punct	6:punct	_
