We want to enter Thailand on 12/12 and then travel to Laos on 17-19 and then re-enter Thailand on 20/1 for another 34 days we have British passports. Should we do visa exempt for the first few days in Thailand and get a 60 day visa for the second entry?
TLDR : Answer Summary
The advice suggests entering Thailand visa exempt for the initial stay and opting to re-enter under visa exemption again after your trip to Laos, with the possibility of a 30-day extension to accommodate your 34-day stay.