ありがとうございます - ありがとうざいます
Hello there! When saying 'good morning' or 'thank you' (formally), most people don't pronounce the 'go', or barely.
e.g.
ありがとうざいます (arigatouzaimasu)
おはようざいます (ohayouzaimasu)
I understand this is only used in speech, but
1) is it less formal?
2) does it sound more native?
3) when to not use this? (or is it always okay?)
Thank you!
よろしくおねがいします。