The traditional opening time for many hotels is the Orthodox Easter, although some do not open until the end of April.
( ( ( The ( traditional ( opening time ) ) ) ( for ( many hotels ) ) ) ( ( ( ( is ( the ( Orthodox Easter ) ) ) , ) ( although ( some ( ( do not ) ( open ( until ( ( the end ) ( of April ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ traditional) (NN opening) (NN time)) (PP (IN for) (NP (JJ many) (NNS hotels)))) (VP (VBZ is) (NP (DT the) (NNP Orthodox) (NNP Easter)) (, ,) (SBAR (IN although) (S (NP (DT some)) (VP (VBP do) (RB not) (VP (VB open) (PP (IN until) (NP (NP (DT the) (NN end)) (PP (IN of) (NP (NNP April)))))))))) (. .)))
The hotels don't open in Halloween.
( ( The hotels ) ( ( ( do n't ) ( open ( in Halloween ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS hotels)) (VP (VBP do) (RB n't) (VP (VB open) (PP (IN in) (NP (NNP Halloween))))) (. .)))