Solution to 25D has been deliberately left unsolved and is to be answered by a non-regular/novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to answer, if not solved by 1 PM.
ACROSS
1 Army man's struggle for country (7) MYANMAR*
10 Fancy hat priced so low (4,5) DIRT CHEAP* Semi&lit
11 Practising initially with one book daily (9) OBSERVANT {One}{B}{SERVANT}
12 Maybe Christopher's missing others on the mountain (5) REEVE {RE}{EVErest}
13 Made it back off a bit and fastened (4) TIED [T<=]
22 Mercury transits symbol of female passivity and is hurrying off (5) HYING {H{YIN}G}
24 Type of fish on the rocky seashores (3,6) SEA HORSES*
28 Sister's travel counters (7) RESISTS*
29 Another thing that is meant to be a retirement cover (7) NIGHTIE {THING*}{IE}
DOWN
1 Could be remote visitor from the heavens (6) METEOR*
3 More detailed coverage of one in a villa (5) MANOR {M{AN}ORe}
4 Welcome sign of a communist reprimand (3,6) RED CARPET {RED}{CARPET}
5 Live on time - it could be felt (5) BERET {BE}{RE}{T}
6 Instrument with electric cable, no one to set up (9) ACCORDION {AC}{CORD}{NO 1<=}
8 Excellent sandwiches - pay first for an evening meal (6) SUPPER {SUP{Pay}ER}
14 Female star billionaire strays (9) DIVAGATES {DIVA}{GATES}
16 Special screen with current input at regular intervals for a medical procedure (9) CAESAREAN {C{A}ES{A}RE{A}N*}
17 Gives up on pastry - that should give an impetus (4,5) KICK START {KICKS}{TART}
20 Service without sin - how to stop barrage? (6) SHOWER {S{HOW}ERvice}
21 Cash or easy payment option to acquire land (6) ASHORE [T]
23 One competes with climbers (5) IVIES {1}{VIES}
25 Outstanding split opinion (5) O?I?G (Addendum - OWING {O}{WING} - See comments)
Reference List
Vermouth = IT, Book = B, On = RE, Time = T, Tent = WINE, Old = O, Current = A, On board = SS, Pinion = WING

