First basics about arpeggiated chords:
If there are separate arpeggio signs in front of chords in LH and RH, doesn't this mean that you should start simultaneously with LH and RH? And also end simultaneoulsy regardless of the number of notes you play arpeggio?
And if the arpeggio sign is stretched from the LH chord to the RH chord, then you of course start the arpeggio from the bass note. Right?
But when should you start the arpeggion in RH when there is a single note, or a not arpeggiated chord in LH?
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Then to grace notes in combination with arpeggios:
In Nocturne Op 55/1 (F-flat minor) by Chopin, there are grace notes in combination with arpeggios.
I suppose a grace note with a slash through the stem before the arpeggio sign ( e.g. in bar 32 and 49) should be played first and then the arpeggio.
But then I recognized grace notes after the arpeggio sign - e.g. in bar 53. Should I play the 3 notes in LH together with the 4 notes in RH taking the grace note before the the melody note C (that means 3 against 4).
This is not difficult, however starting from the bass note of LH and continuing with the arpeggio in RH makes it more simple and clear - and IMO not less beautiful.
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Finally a question regarding the three thrills on half notes, ending with different figures. I play six notes (B-flat C B-flat C B-flat C) on the first quarter note, and then three notes (B-flat C B-flat) before the prescribed figure. I got the impression from some recordings that the thrill could be faster and longer...and that you even can stretch the tempo.
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I have noticed that famous pianists often play ornaments their own way, some time adding, some times omitting grace notes. And because of the artistic freedom on one hand and physical necessity on the other hand pianists may arpeggiate chords having no arpeggio sign. I can even imagine the composer playing ornaments, and even some accompanying chords, slightly differently from time to time.
How seriously should you therefore stick to rules - if there are strict rules - regarding ornaments and similar?