Is it okay to bounce with DTV via air and come back on the same day? (BKK airports)

Can I bring imac m1 on board? I bought it when I was in Bangkok, if I returned to Vietnam. I need to bring it back. Consignment is very dangerous, fragile and easily damaged.

Not visa related.

Time to leave Thailand is drawing close for me .

I've got a couple of motorcycle helmets I want to take home .

Is there any type of boxing service at Suvarnabhumi airport so I can send them checked .

Think I may get refused for carry on as I already have a back pack with none checkable items .

If not do any of the Thai couriers do boxing without having to use their postal service ?

Thanks 👍

Nick

Do you I need to provide a return ticket for TR knowing I'll be extending 30days ??

Can I show a bus ticket from Aranyapethet to Siem Reap as onwards travel, when I check-in for a flight from England?

Or does it have to be a flight?

TIA